diff --git a/docs/data-sources/mariadb_credential.md b/docs/data-sources/mariadb_credential.md
index dc5de1367..d0e9bab69 100644
--- a/docs/data-sources/mariadb_credential.md
+++ b/docs/data-sources/mariadb_credential.md
@@ -29,11 +29,15 @@ data "stackit_mariadb_credential" "example" {
 - `instance_id` (String) ID of the MariaDB instance.
 - `project_id` (String) STACKIT project ID to which the instance is associated.
 
+### Optional
+
+- `region` (String) The resource region. If not defined, the provider region is used.
+
 ### Read-Only
 
 - `host` (String)
 - `hosts` (List of String)
-- `id` (String) Terraform's internal data source. identifier. It is structured as "`project_id`,`instance_id`,`credential_id`".
+- `id` (String) Terraform's internal data source. identifier. It is structured as "`project_id`,`region`,`instance_id`,`credential_id`".
 - `name` (String)
 - `password` (String, Sensitive)
 - `port` (Number)
diff --git a/docs/data-sources/mariadb_instance.md b/docs/data-sources/mariadb_instance.md
index be2553cc6..42743ea19 100644
--- a/docs/data-sources/mariadb_instance.md
+++ b/docs/data-sources/mariadb_instance.md
@@ -27,13 +27,17 @@ data "stackit_mariadb_instance" "example" {
 - `instance_id` (String) ID of the MariaDB instance.
 - `project_id` (String) STACKIT Project ID to which the instance is associated.
 
+### Optional
+
+- `region` (String) The resource region. If not defined, the provider region is used.
+
 ### Read-Only
 
 - `cf_guid` (String)
 - `cf_organization_guid` (String)
 - `cf_space_guid` (String)
 - `dashboard_url` (String)
-- `id` (String) Terraform's internal data source. identifier. It is structured as "`project_id`,`instance_id`".
+- `id` (String) Terraform's internal data source. identifier. It is structured as "`project_id`,`region`,`instance_id`".
 - `image_url` (String)
 - `name` (String) Instance name.
 - `parameters` (Attributes) (see [below for nested schema](#nestedatt--parameters))
diff --git a/docs/resources/mariadb_credential.md b/docs/resources/mariadb_credential.md
index 417718bdb..eb3e1f403 100644
--- a/docs/resources/mariadb_credential.md
+++ b/docs/resources/mariadb_credential.md
@@ -42,6 +42,7 @@ resource "stackit_mariadb_credential" "example_rotate" {
 
 ### Optional
 
+- `region` (String) The resource region. If not defined, the provider region is used.
 - `rotate_when_changed` (Map of String) A map of arbitrary key/value pairs that will force recreation of the resource when they change, enabling resource rotation based on external conditions such as a rotating timestamp. Changing this forces a new resource to be created.
 
 ### Read-Only
@@ -49,7 +50,7 @@ resource "stackit_mariadb_credential" "example_rotate" {
 - `credential_id` (String) The credential's ID.
 - `host` (String)
 - `hosts` (List of String)
-- `id` (String) Terraform's internal resource identifier. It is structured as "`project_id`,`instance_id`,`credential_id`".
+- `id` (String) Terraform's internal resource identifier. It is structured as "`project_id`,`region`,`instance_id`,`credential_id`".
 - `name` (String)
 - `password` (String, Sensitive)
 - `port` (Number)
@@ -66,6 +67,6 @@ In Terraform v1.5.0 and later, the [` + "`" + `import` + "`" + ` block](https://
 # Only use the import statement, if you want to import an existing mariadb credential
 import {
   to = stackit_mariadb_credential.import-example
-  id = "${var.project_id},${var.mariadb_instance_id},${var.mariadb_credential_id}"
+  id = "${var.project_id},${var.region},${var.mariadb_instance_id},${var.mariadb_credential_id}"
 }
 ```
diff --git a/docs/resources/mariadb_instance.md b/docs/resources/mariadb_instance.md
index ddabdf615..5fd2d3f58 100644
--- a/docs/resources/mariadb_instance.md
+++ b/docs/resources/mariadb_instance.md
@@ -37,6 +37,7 @@ resource "stackit_mariadb_instance" "example" {
 ### Optional
 
 - `parameters` (Attributes) Configuration parameters. Please note that removing a previously configured field from your Terraform configuration won't replace its value in the API. To update a previously configured field, explicitly set a new value for it. (see [below for nested schema](#nestedatt--parameters))
+- `region` (String) The resource region. If not defined, the provider region is used.
 
 ### Read-Only
 
@@ -44,7 +45,7 @@ resource "stackit_mariadb_instance" "example" {
 - `cf_organization_guid` (String)
 - `cf_space_guid` (String)
 - `dashboard_url` (String)
-- `id` (String) Terraform's internal resource ID. It is structured as "`project_id`,`instance_id`".
+- `id` (String) Terraform's internal resource ID. It is structured as "`project_id`,`region`,`instance_id`".
 - `image_url` (String)
 - `instance_id` (String) ID of the MariaDB instance.
 - `plan_id` (String) The selected plan ID.
@@ -73,6 +74,6 @@ In Terraform v1.5.0 and later, the [` + "`" + `import` + "`" + ` block](https://
 # Only use the import statement, if you want to import an existing mariadb instance
 import {
   to = stackit_mariadb_instance.import-example
-  id = "${var.project_id},${var.mariadb_instance_id}"
+  id = "${var.project_id},${var.region},${var.mariadb_instance_id}"
 }
 ```
diff --git a/examples/resources/stackit_mariadb_credential/import-by-string-id.tf b/examples/resources/stackit_mariadb_credential/import-by-string-id.tf
index 8b00ef53b..c906a5e47 100644
--- a/examples/resources/stackit_mariadb_credential/import-by-string-id.tf
+++ b/examples/resources/stackit_mariadb_credential/import-by-string-id.tf
@@ -1,5 +1,5 @@
 # Only use the import statement, if you want to import an existing mariadb credential
 import {
   to = stackit_mariadb_credential.import-example
-  id = "${var.project_id},${var.mariadb_instance_id},${var.mariadb_credential_id}"
+  id = "${var.project_id},${var.region},${var.mariadb_instance_id},${var.mariadb_credential_id}"
 }
diff --git a/examples/resources/stackit_mariadb_instance/import-by-string-id.tf b/examples/resources/stackit_mariadb_instance/import-by-string-id.tf
index e696a4e3f..0393edd03 100644
--- a/examples/resources/stackit_mariadb_instance/import-by-string-id.tf
+++ b/examples/resources/stackit_mariadb_instance/import-by-string-id.tf
@@ -1,5 +1,5 @@
 # Only use the import statement, if you want to import an existing mariadb instance
 import {
   to = stackit_mariadb_instance.import-example
-  id = "${var.project_id},${var.mariadb_instance_id}"
+  id = "${var.project_id},${var.region},${var.mariadb_instance_id}"
 }
diff --git a/go.mod b/go.mod
index f530b0b66..e78461d68 100644
--- a/go.mod
+++ b/go.mod
@@ -27,7 +27,7 @@ require (
 	github.com/stackitcloud/stackit-sdk-go/services/loadbalancer v1.15.0
 	github.com/stackitcloud/stackit-sdk-go/services/logme v1.0.1
 	github.com/stackitcloud/stackit-sdk-go/services/logs v0.10.0
-	github.com/stackitcloud/stackit-sdk-go/services/mariadb v1.0.1
+	github.com/stackitcloud/stackit-sdk-go/services/mariadb v1.1.0
 	github.com/stackitcloud/stackit-sdk-go/services/modelserving v0.11.0
 	github.com/stackitcloud/stackit-sdk-go/services/mongodbflex v1.12.0
 	github.com/stackitcloud/stackit-sdk-go/services/objectstorage v1.9.0
diff --git a/go.sum b/go.sum
index 78bb4a31f..be2ed0801 100644
--- a/go.sum
+++ b/go.sum
@@ -700,8 +700,8 @@ github.com/stackitcloud/stackit-sdk-go/services/logme v1.0.1 h1:iteL61eMMPWT6872
 github.com/stackitcloud/stackit-sdk-go/services/logme v1.0.1/go.mod h1:JDOOYaGgcBts2x52nKPRMFgSZe7qqOFmfz1xIXCQgRY=
 github.com/stackitcloud/stackit-sdk-go/services/logs v0.10.0 h1:g7zpfQFFq3UhAWrMK9rPaZY6dLMAuMJf5g6+r7VRTXc=
 github.com/stackitcloud/stackit-sdk-go/services/logs v0.10.0/go.mod h1:tvRejL8w5KpGBbLFPQ+dXOJURgZ3OMbZmwxlKQrGMuA=
-github.com/stackitcloud/stackit-sdk-go/services/mariadb v1.0.1 h1:Ll1erKKms7OnFva3bRXOs9PEYLoWJp5prSg985K0glk=
-github.com/stackitcloud/stackit-sdk-go/services/mariadb v1.0.1/go.mod h1:joa89Y1dyn0j22FstRcIKfW2ada3FDxNfttxSvq27uY=
+github.com/stackitcloud/stackit-sdk-go/services/mariadb v1.1.0 h1:3IZ3baztlqmkkDxwBfRymYTFeZa3AARVXYlt3hohfPs=
+github.com/stackitcloud/stackit-sdk-go/services/mariadb v1.1.0/go.mod h1:joa89Y1dyn0j22FstRcIKfW2ada3FDxNfttxSvq27uY=
 github.com/stackitcloud/stackit-sdk-go/services/modelserving v0.11.0 h1:LfcQ++Z8a13jrJ5NOaCY/hwToh/e+QJj0eS6rd6s6k8=
 github.com/stackitcloud/stackit-sdk-go/services/modelserving v0.11.0/go.mod h1:u7T85YqoqncJevbPU1ODKthbmxxEh1zw+bVaAO8v0Sg=
 github.com/stackitcloud/stackit-sdk-go/services/mongodbflex v1.12.0 h1:SVd3WMmLAE0Jxk2SaRuM85DTOOXHycyMpZGx9vzqNkI=
diff --git a/stackit/internal/services/mariadb/credential/datasource.go b/stackit/internal/services/mariadb/credential/datasource.go
index f8244cbf3..a2f3505f1 100644
--- a/stackit/internal/services/mariadb/credential/datasource.go
+++ b/stackit/internal/services/mariadb/credential/datasource.go
@@ -18,12 +18,13 @@ import (
 
 	"github.com/hashicorp/terraform-plugin-framework/datasource/schema"
 	"github.com/hashicorp/terraform-plugin-framework/types"
-	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api"
+	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api"
 )
 
 // Ensure the implementation satisfies the expected interfaces.
 var (
-	_ datasource.DataSource = &credentialDataSource{}
+	_ datasource.DataSource              = &credentialDataSource{}
+	_ datasource.DataSourceWithConfigure = &credentialDataSource{}
 )
 
 type DataSourceModel struct {
@@ -38,6 +39,7 @@ type DataSourceModel struct {
 	Port         types.Int32  `tfsdk:"port"`
 	Uri          types.String `tfsdk:"uri"`
 	Username     types.String `tfsdk:"username"`
+	Region       types.String `tfsdk:"region"`
 }
 
 // NewCredentialDataSource is a helper function to simplify the provider implementation.
@@ -47,37 +49,40 @@ func NewCredentialDataSource() datasource.DataSource {
 
 // credentialDataSource is the data source implementation.
 type credentialDataSource struct {
-	client *mariadb.APIClient
+	client       *mariadb.APIClient
+	providerData core.ProviderData
 }
 
 // Metadata returns the data source type name.
-func (r *credentialDataSource) Metadata(_ context.Context, req datasource.MetadataRequest, resp *datasource.MetadataResponse) {
+func (d *credentialDataSource) Metadata(_ context.Context, req datasource.MetadataRequest, resp *datasource.MetadataResponse) {
 	resp.TypeName = req.ProviderTypeName + "_mariadb_credential"
 }
 
 // Configure adds the provider configured client to the data source.
-func (r *credentialDataSource) Configure(ctx context.Context, req datasource.ConfigureRequest, resp *datasource.ConfigureResponse) {
-	providerData, ok := conversion.ParseProviderData(ctx, req.ProviderData, &resp.Diagnostics)
+func (d *credentialDataSource) Configure(ctx context.Context, req datasource.ConfigureRequest, resp *datasource.ConfigureResponse) {
+	var ok bool
+	d.providerData, ok = conversion.ParseProviderData(ctx, req.ProviderData, &resp.Diagnostics)
 	if !ok {
 		return
 	}
 
-	apiClient := mariadbUtils.ConfigureClient(ctx, &providerData, &resp.Diagnostics)
+	apiClient := mariadbUtils.ConfigureClient(ctx, &d.providerData, &resp.Diagnostics)
 	if resp.Diagnostics.HasError() {
 		return
 	}
-	r.client = apiClient
+	d.client = apiClient
 	tflog.Info(ctx, "mariadb credential client configured")
 }
 
 // Schema defines the schema for the data source.
-func (r *credentialDataSource) Schema(_ context.Context, _ datasource.SchemaRequest, resp *datasource.SchemaResponse) {
+func (d *credentialDataSource) Schema(_ context.Context, _ datasource.SchemaRequest, resp *datasource.SchemaResponse) {
 	descriptions := map[string]string{ //nolint:gosec // description for credential id
 		"main":          "MariaDB credential data source schema. Must have a `region` specified in the provider configuration.",
-		"id":            "Terraform's internal data source. identifier. It is structured as \"`project_id`,`instance_id`,`credential_id`\".",
+		"id":            "Terraform's internal data source. identifier. It is structured as \"`project_id`,`region`,`instance_id`,`credential_id`\".",
 		"credential_id": "The credential's ID.",
 		"instance_id":   "ID of the MariaDB instance.",
 		"project_id":    "STACKIT project ID to which the instance is associated.",
+		"region":        "The resource region. If not defined, the provider region is used.",
 	}
 
 	resp.Schema = schema.Schema{
@@ -135,12 +140,18 @@ func (r *credentialDataSource) Schema(_ context.Context, _ datasource.SchemaRequ
 			"username": schema.StringAttribute{
 				Computed: true,
 			},
+			"region": schema.StringAttribute{
+				Optional: true,
+				// must be computed to allow for storing the override value from the provider
+				Computed:    true,
+				Description: descriptions["region"],
+			},
 		},
 	}
 }
 
 // Read refreshes the Terraform state with the latest data.
-func (r *credentialDataSource) Read(ctx context.Context, req datasource.ReadRequest, resp *datasource.ReadResponse) { // nolint:gocritic // function signature required by Terraform
+func (d *credentialDataSource) Read(ctx context.Context, req datasource.ReadRequest, resp *datasource.ReadResponse) { // nolint:gocritic // function signature required by Terraform
 	var model DataSourceModel
 	diags := req.Config.Get(ctx, &model)
 	resp.Diagnostics.Append(diags...)
@@ -151,13 +162,15 @@ func (r *credentialDataSource) Read(ctx context.Context, req datasource.ReadRequ
 	ctx = core.InitProviderContext(ctx)
 
 	projectId := model.ProjectId.ValueString()
+	region := d.providerData.GetRegionWithOverride(model.Region)
 	instanceId := model.InstanceId.ValueString()
 	credentialId := model.CredentialId.ValueString()
 	ctx = tflog.SetField(ctx, "project_id", projectId)
+	ctx = tflog.SetField(ctx, "region", region)
 	ctx = tflog.SetField(ctx, "instance_id", instanceId)
 	ctx = tflog.SetField(ctx, "credential_id", credentialId)
 
-	recordSetResp, err := r.client.DefaultAPI.GetCredentials(ctx, projectId, instanceId, credentialId).Execute()
+	recordSetResp, err := d.client.DefaultAPI.GetCredentials(ctx, projectId, region, instanceId, credentialId).Execute()
 	if err != nil {
 		utils.LogError(
 			ctx,
@@ -176,7 +189,7 @@ func (r *credentialDataSource) Read(ctx context.Context, req datasource.ReadRequ
 	ctx = core.LogResponse(ctx)
 
 	// Map response body to schema
-	err = mapDataSourceFields(ctx, recordSetResp, &model)
+	err = mapDataSourceFields(ctx, recordSetResp, &model, region)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error reading credential", fmt.Sprintf("Processing API payload: %v", err))
 		return
@@ -191,7 +204,7 @@ func (r *credentialDataSource) Read(ctx context.Context, req datasource.ReadRequ
 	tflog.Info(ctx, "mariadb credential read")
 }
 
-func mapDataSourceFields(ctx context.Context, credentialsResp *mariadb.CredentialsResponse, model *DataSourceModel) error {
+func mapDataSourceFields(ctx context.Context, credentialsResp *mariadb.CredentialsResponse, model *DataSourceModel, region string) error {
 	if credentialsResp == nil {
 		return fmt.Errorf("response input is nil")
 	}
@@ -214,9 +227,11 @@ func mapDataSourceFields(ctx context.Context, credentialsResp *mariadb.Credentia
 
 	model.Id = utils.BuildInternalTerraformId(
 		model.ProjectId.ValueString(),
+		region,
 		model.InstanceId.ValueString(),
 		credentialId,
 	)
+	model.Region = types.StringValue(region)
 
 	modelHosts, err := utils.ListValueToStringSlice(model.Hosts)
 	if err != nil {
diff --git a/stackit/internal/services/mariadb/credential/datasource_test.go b/stackit/internal/services/mariadb/credential/datasource_test.go
index bbf487742..c2af9ad91 100644
--- a/stackit/internal/services/mariadb/credential/datasource_test.go
+++ b/stackit/internal/services/mariadb/credential/datasource_test.go
@@ -2,12 +2,13 @@ package mariadb
 
 import (
 	"context"
+	"fmt"
 	"testing"
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/hashicorp/terraform-plugin-framework/attr"
 	"github.com/hashicorp/terraform-plugin-framework/types"
-	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api"
+	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api"
 )
 
 func TestMapDataSourceFields(t *testing.T) {
@@ -29,7 +30,7 @@ func TestMapDataSourceFields(t *testing.T) {
 				Raw: &mariadb.RawCredentials{},
 			},
 			DataSourceModel{
-				Id:           types.StringValue("pid,iid,cid"),
+				Id:           types.StringValue(fmt.Sprintf("pid,%s,iid,cid", testRegion)),
 				CredentialId: types.StringValue("cid"),
 				InstanceId:   types.StringValue("iid"),
 				ProjectId:    types.StringValue("pid"),
@@ -40,6 +41,7 @@ func TestMapDataSourceFields(t *testing.T) {
 				Port:         types.Int32Null(),
 				Uri:          types.StringNull(),
 				Username:     types.StringValue(""),
+				Region:       types.StringValue(testRegion),
 			},
 			true,
 		},
@@ -67,7 +69,7 @@ func TestMapDataSourceFields(t *testing.T) {
 				},
 			},
 			DataSourceModel{
-				Id:           types.StringValue("pid,iid,cid"),
+				Id:           types.StringValue(fmt.Sprintf("pid,%s,iid,cid", testRegion)),
 				CredentialId: types.StringValue("cid"),
 				InstanceId:   types.StringValue("iid"),
 				ProjectId:    types.StringValue("pid"),
@@ -81,6 +83,7 @@ func TestMapDataSourceFields(t *testing.T) {
 				Port:     types.Int32Value(1234),
 				Uri:      types.StringValue("uri"),
 				Username: types.StringValue("username"),
+				Region:   types.StringValue(testRegion),
 			},
 			true,
 		},
@@ -114,7 +117,7 @@ func TestMapDataSourceFields(t *testing.T) {
 				},
 			},
 			DataSourceModel{
-				Id:           types.StringValue("pid,iid,cid"),
+				Id:           types.StringValue(fmt.Sprintf("pid,%s,iid,cid", testRegion)),
 				CredentialId: types.StringValue("cid"),
 				InstanceId:   types.StringValue("iid"),
 				ProjectId:    types.StringValue("pid"),
@@ -129,6 +132,7 @@ func TestMapDataSourceFields(t *testing.T) {
 				Port:     types.Int32Value(1234),
 				Uri:      types.StringValue("uri"),
 				Username: types.StringValue("username"),
+				Region:   types.StringValue(testRegion),
 			},
 			true,
 		},
@@ -153,7 +157,7 @@ func TestMapDataSourceFields(t *testing.T) {
 				},
 			},
 			DataSourceModel{
-				Id:           types.StringValue("pid,iid,cid"),
+				Id:           types.StringValue(fmt.Sprintf("pid,%s,iid,cid", testRegion)),
 				CredentialId: types.StringValue("cid"),
 				InstanceId:   types.StringValue("iid"),
 				ProjectId:    types.StringValue("pid"),
@@ -164,6 +168,7 @@ func TestMapDataSourceFields(t *testing.T) {
 				Port:         types.Int32Value(2123456789),
 				Uri:          types.StringNull(),
 				Username:     types.StringValue(""),
+				Region:       types.StringValue(testRegion),
 			},
 			true,
 		},
@@ -202,7 +207,7 @@ func TestMapDataSourceFields(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.description, func(t *testing.T) {
-			err := mapDataSourceFields(context.Background(), tt.input, &tt.state)
+			err := mapDataSourceFields(context.Background(), tt.input, &tt.state, testRegion)
 			if !tt.isValid && err == nil {
 				t.Fatalf("Should have failed")
 			}
diff --git a/stackit/internal/services/mariadb/credential/resource.go b/stackit/internal/services/mariadb/credential/resource.go
index f7a355fa1..90f322a34 100644
--- a/stackit/internal/services/mariadb/credential/resource.go
+++ b/stackit/internal/services/mariadb/credential/resource.go
@@ -25,8 +25,8 @@ import (
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/stringplanmodifier"
 	"github.com/hashicorp/terraform-plugin-framework/types"
 	"github.com/stackitcloud/stackit-sdk-go/core/oapierror"
-	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api"
-	"github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api/wait"
+	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api"
+	"github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api/wait"
 )
 
 // Ensure the implementation satisfies the expected interfaces.
@@ -34,6 +34,7 @@ var (
 	_ resource.Resource                = &credentialResource{}
 	_ resource.ResourceWithConfigure   = &credentialResource{}
 	_ resource.ResourceWithImportState = &credentialResource{}
+	_ resource.ResourceWithModifyPlan  = &credentialResource{}
 )
 
 type Model struct {
@@ -52,7 +53,8 @@ type Model struct {
 	// recreation of the resource when they change, enabling resource rotation based on
 	// external conditions such as a rotating timestamp. Changing this forces a new
 	// resource to be created.
-	RotateWhenChanged types.Map `tfsdk:"rotate_when_changed"`
+	RotateWhenChanged types.Map    `tfsdk:"rotate_when_changed"`
+	Region            types.String `tfsdk:"region"`
 }
 
 // NewCredentialResource is a helper function to simplify the provider implementation.
@@ -62,7 +64,8 @@ func NewCredentialResource() resource.Resource {
 
 // credentialResource is the resource implementation.
 type credentialResource struct {
-	client *mariadb.APIClient
+	client       *mariadb.APIClient
+	providerData core.ProviderData
 }
 
 // Metadata returns the resource type name.
@@ -72,12 +75,13 @@ func (r *credentialResource) Metadata(_ context.Context, req resource.MetadataRe
 
 // Configure adds the provider configured client to the resource.
 func (r *credentialResource) Configure(ctx context.Context, req resource.ConfigureRequest, resp *resource.ConfigureResponse) {
-	providerData, ok := conversion.ParseProviderData(ctx, req.ProviderData, &resp.Diagnostics)
+	var ok bool
+	r.providerData, ok = conversion.ParseProviderData(ctx, req.ProviderData, &resp.Diagnostics)
 	if !ok {
 		return
 	}
 
-	apiClient := mariadbUtils.ConfigureClient(ctx, &providerData, &resp.Diagnostics)
+	apiClient := mariadbUtils.ConfigureClient(ctx, &r.providerData, &resp.Diagnostics)
 	if resp.Diagnostics.HasError() {
 		return
 	}
@@ -85,14 +89,45 @@ func (r *credentialResource) Configure(ctx context.Context, req resource.Configu
 	tflog.Info(ctx, "MariaDB credential client configured")
 }
 
+// ModifyPlan implements resource.ResourceWithModifyPlan.
+// Use the modifier to set the effective region in the current plan.
+func (r *credentialResource) ModifyPlan(ctx context.Context, req resource.ModifyPlanRequest, resp *resource.ModifyPlanResponse) { // nolint:gocritic // function signature required by Terraform
+	var configModel Model
+	// skip initial empty configuration to avoid follow-up errors
+	if req.Config.Raw.IsNull() {
+		return
+	}
+	resp.Diagnostics.Append(req.Config.Get(ctx, &configModel)...)
+	if resp.Diagnostics.HasError() {
+		return
+	}
+
+	var planModel Model
+	resp.Diagnostics.Append(req.Plan.Get(ctx, &planModel)...)
+	if resp.Diagnostics.HasError() {
+		return
+	}
+
+	utils.AdaptRegion(ctx, configModel.Region, &planModel.Region, r.providerData.GetRegion(), resp)
+	if resp.Diagnostics.HasError() {
+		return
+	}
+
+	resp.Diagnostics.Append(resp.Plan.Set(ctx, planModel)...)
+	if resp.Diagnostics.HasError() {
+		return
+	}
+}
+
 // Schema defines the schema for the resource.
 func (r *credentialResource) Schema(_ context.Context, _ resource.SchemaRequest, resp *resource.SchemaResponse) {
 	descriptions := map[string]string{ //nolint:gosec // description for credential id
 		"main":          "MariaDB credential resource schema. Must have a `region` specified in the provider configuration.",
-		"id":            "Terraform's internal resource identifier. It is structured as \"`project_id`,`instance_id`,`credential_id`\".",
+		"id":            "Terraform's internal resource identifier. It is structured as \"`project_id`,`region`,`instance_id`,`credential_id`\".",
 		"credential_id": "The credential's ID.",
 		"instance_id":   "ID of the MariaDB instance.",
 		"project_id":    "STACKIT Project ID to which the instance is associated.",
+		"region":        "The resource region. If not defined, the provider region is used.",
 	}
 
 	resp.Schema = schema.Schema{
@@ -176,6 +211,15 @@ func (r *credentialResource) Schema(_ context.Context, _ resource.SchemaRequest,
 					mapplanmodifier.RequiresReplace(),
 				},
 			},
+			"region": schema.StringAttribute{
+				Optional: true,
+				// must be computed to allow for storing the override value from the provider
+				Computed:    true,
+				Description: descriptions["region"],
+				PlanModifiers: []planmodifier.String{
+					stringplanmodifier.RequiresReplace(),
+				},
+			},
 		},
 	}
 }
@@ -192,12 +236,14 @@ func (r *credentialResource) Create(ctx context.Context, req resource.CreateRequ
 	ctx = core.InitProviderContext(ctx)
 
 	projectId := model.ProjectId.ValueString()
+	region := r.providerData.GetRegionWithOverride(model.Region)
 	instanceId := model.InstanceId.ValueString()
 	ctx = tflog.SetField(ctx, "project_id", projectId)
+	ctx = tflog.SetField(ctx, "region", region)
 	ctx = tflog.SetField(ctx, "instance_id", instanceId)
 
 	// Create new recordset
-	credentialsResp, err := r.client.DefaultAPI.CreateCredentials(ctx, projectId, instanceId).Execute()
+	credentialsResp, err := r.client.DefaultAPI.CreateCredentials(ctx, projectId, region, instanceId).Execute()
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error creating credential", fmt.Sprintf("Calling API: %v", err))
 		return
@@ -209,6 +255,7 @@ func (r *credentialResource) Create(ctx context.Context, req resource.CreateRequ
 	// Write id attributes to state before polling via the wait handler - just in case anything goes wrong during the wait handler
 	ctx = utils.SetAndLogStateFields(ctx, &resp.Diagnostics, &resp.State, map[string]any{
 		"project_id":    projectId,
+		"region":        region,
 		"instance_id":   instanceId,
 		"credential_id": credentialId,
 	})
@@ -216,14 +263,14 @@ func (r *credentialResource) Create(ctx context.Context, req resource.CreateRequ
 		return
 	}
 
-	waitResp, err := wait.CreateCredentialsWaitHandler(ctx, r.client.DefaultAPI, projectId, instanceId, credentialId).WaitWithContext(ctx)
+	waitResp, err := wait.CreateCredentialsWaitHandler(ctx, r.client.DefaultAPI, projectId, region, instanceId, credentialId).WaitWithContext(ctx)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error creating credential", fmt.Sprintf("Instance creation waiting: %v", err))
 		return
 	}
 
 	// Map response body to schema
-	err = mapFields(ctx, waitResp, &model)
+	err = mapFields(ctx, waitResp, &model, region)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error creating credential", fmt.Sprintf("Processing API payload: %v", err))
 		return
@@ -248,6 +295,7 @@ func (r *credentialResource) Read(ctx context.Context, req resource.ReadRequest,
 	ctx = core.InitProviderContext(ctx)
 
 	projectId := model.ProjectId.ValueString()
+	region := r.providerData.GetRegionWithOverride(model.Region)
 	instanceId := model.InstanceId.ValueString()
 	credentialId := model.CredentialId.ValueString()
 	if credentialId == "" {
@@ -256,10 +304,11 @@ func (r *credentialResource) Read(ctx context.Context, req resource.ReadRequest,
 		return
 	}
 	ctx = tflog.SetField(ctx, "project_id", projectId)
+	ctx = tflog.SetField(ctx, "region", region)
 	ctx = tflog.SetField(ctx, "instance_id", instanceId)
 	ctx = tflog.SetField(ctx, "credential_id", credentialId)
 
-	recordSetResp, err := r.client.DefaultAPI.GetCredentials(ctx, projectId, instanceId, credentialId).Execute()
+	recordSetResp, err := r.client.DefaultAPI.GetCredentials(ctx, projectId, region, instanceId, credentialId).Execute()
 	if err != nil {
 		var oapiErr *oapierror.GenericOpenAPIError
 		if errors.As(err, &oapiErr) && oapiErr.StatusCode == http.StatusNotFound {
@@ -273,7 +322,7 @@ func (r *credentialResource) Read(ctx context.Context, req resource.ReadRequest,
 	ctx = core.LogResponse(ctx)
 
 	// Map response body to schema
-	err = mapFields(ctx, recordSetResp, &model)
+	err = mapFields(ctx, recordSetResp, &model, region)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error reading credential", fmt.Sprintf("Processing API payload: %v", err))
 		return
@@ -306,14 +355,16 @@ func (r *credentialResource) Delete(ctx context.Context, req resource.DeleteRequ
 	ctx = core.InitProviderContext(ctx)
 
 	projectId := model.ProjectId.ValueString()
+	region := r.providerData.GetRegionWithOverride(model.Region)
 	instanceId := model.InstanceId.ValueString()
 	credentialId := model.CredentialId.ValueString()
 	ctx = tflog.SetField(ctx, "project_id", projectId)
+	ctx = tflog.SetField(ctx, "region", region)
 	ctx = tflog.SetField(ctx, "instance_id", instanceId)
 	ctx = tflog.SetField(ctx, "credential_id", credentialId)
 
 	// Delete existing record set
-	err := r.client.DefaultAPI.DeleteCredentials(ctx, projectId, instanceId, credentialId).Execute()
+	err := r.client.DefaultAPI.DeleteCredentials(ctx, projectId, region, instanceId, credentialId).Execute()
 	if err != nil {
 		var oapiErr *oapierror.GenericOpenAPIError
 		if errors.As(err, &oapiErr) && oapiErr.StatusCode == http.StatusNotFound {
@@ -325,7 +376,7 @@ func (r *credentialResource) Delete(ctx context.Context, req resource.DeleteRequ
 
 	ctx = core.LogResponse(ctx)
 
-	_, err = wait.DeleteCredentialsWaitHandler(ctx, r.client.DefaultAPI, projectId, instanceId, credentialId).WaitWithContext(ctx)
+	_, err = wait.DeleteCredentialsWaitHandler(ctx, r.client.DefaultAPI, projectId, region, instanceId, credentialId).WaitWithContext(ctx)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error deleting credential", fmt.Sprintf("Instance deletion waiting: %v", err))
 		return
@@ -334,26 +385,27 @@ func (r *credentialResource) Delete(ctx context.Context, req resource.DeleteRequ
 }
 
 // ImportState imports a resource into the Terraform state on success.
-// The expected format of the resource import identifier is: project_id,instance_id,credential_id
+// The expected format of the resource import identifier is: project_id,region,instance_id,credential_id
 func (r *credentialResource) ImportState(ctx context.Context, req resource.ImportStateRequest, resp *resource.ImportStateResponse) {
 	idParts := strings.Split(req.ID, core.Separator)
-	if len(idParts) != 3 || idParts[0] == "" || idParts[1] == "" || idParts[2] == "" {
+	if len(idParts) != 4 || idParts[0] == "" || idParts[1] == "" || idParts[2] == "" || idParts[3] == "" {
 		core.LogAndAddError(ctx, &resp.Diagnostics,
 			"Error importing credential",
-			fmt.Sprintf("Expected import identifier with format [project_id],[instance_id],[credential_id], got %q", req.ID),
+			fmt.Sprintf("Expected import identifier with format [project_id],[region],[instance_id],[credential_id], got %q", req.ID),
 		)
 		return
 	}
 
 	ctx = utils.SetAndLogStateFields(ctx, &resp.Diagnostics, &resp.State, map[string]any{
 		"project_id":    idParts[0],
-		"instance_id":   idParts[1],
-		"credential_id": idParts[2],
+		"region":        idParts[1],
+		"instance_id":   idParts[2],
+		"credential_id": idParts[3],
 	})
 	tflog.Info(ctx, "MariaDB credential state imported")
 }
 
-func mapFields(ctx context.Context, credentialsResp *mariadb.CredentialsResponse, model *Model) error {
+func mapFields(ctx context.Context, credentialsResp *mariadb.CredentialsResponse, model *Model, region string) error {
 	if credentialsResp == nil {
 		return fmt.Errorf("response input is nil")
 	}
@@ -376,9 +428,11 @@ func mapFields(ctx context.Context, credentialsResp *mariadb.CredentialsResponse
 
 	model.Id = utils.BuildInternalTerraformId(
 		model.ProjectId.ValueString(),
+		region,
 		model.InstanceId.ValueString(),
 		credentialId,
 	)
+	model.Region = types.StringValue(region)
 
 	modelHosts, err := utils.ListValueToStringSlice(model.Hosts)
 	if err != nil {
diff --git a/stackit/internal/services/mariadb/credential/resource_test.go b/stackit/internal/services/mariadb/credential/resource_test.go
index 97aefc43d..42edf76e9 100644
--- a/stackit/internal/services/mariadb/credential/resource_test.go
+++ b/stackit/internal/services/mariadb/credential/resource_test.go
@@ -2,14 +2,17 @@ package mariadb
 
 import (
 	"context"
+	"fmt"
 	"testing"
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/hashicorp/terraform-plugin-framework/attr"
 	"github.com/hashicorp/terraform-plugin-framework/types"
-	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api"
+	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api"
 )
 
+const testRegion = "eu02"
+
 func TestMapFields(t *testing.T) {
 	tests := []struct {
 		description string
@@ -30,7 +33,7 @@ func TestMapFields(t *testing.T) {
 				Raw: &mariadb.RawCredentials{},
 			},
 			Model{
-				Id:                types.StringValue("pid,iid,cid"),
+				Id:                types.StringValue(fmt.Sprintf("pid,%s,iid,cid", testRegion)),
 				CredentialId:      types.StringValue("cid"),
 				InstanceId:        types.StringValue("iid"),
 				ProjectId:         types.StringValue("pid"),
@@ -42,6 +45,7 @@ func TestMapFields(t *testing.T) {
 				Uri:               types.StringNull(),
 				Username:          types.StringValue(""),
 				RotateWhenChanged: types.MapNull(types.StringType),
+				Region:            types.StringValue(testRegion),
 			},
 			true,
 		},
@@ -70,7 +74,7 @@ func TestMapFields(t *testing.T) {
 				},
 			},
 			Model{
-				Id:           types.StringValue("pid,iid,cid"),
+				Id:           types.StringValue(fmt.Sprintf("pid,%s,iid,cid", testRegion)),
 				CredentialId: types.StringValue("cid"),
 				InstanceId:   types.StringValue("iid"),
 				ProjectId:    types.StringValue("pid"),
@@ -85,6 +89,7 @@ func TestMapFields(t *testing.T) {
 				Uri:               types.StringValue("uri"),
 				Username:          types.StringValue("username"),
 				RotateWhenChanged: types.MapNull(types.StringType),
+				Region:            types.StringValue(testRegion),
 			},
 			true,
 		},
@@ -119,7 +124,7 @@ func TestMapFields(t *testing.T) {
 				},
 			},
 			Model{
-				Id:           types.StringValue("pid,iid,cid"),
+				Id:           types.StringValue(fmt.Sprintf("pid,%s,iid,cid", testRegion)),
 				CredentialId: types.StringValue("cid"),
 				InstanceId:   types.StringValue("iid"),
 				ProjectId:    types.StringValue("pid"),
@@ -135,6 +140,7 @@ func TestMapFields(t *testing.T) {
 				Uri:               types.StringValue("uri"),
 				Username:          types.StringValue("username"),
 				RotateWhenChanged: types.MapNull(types.StringType),
+				Region:            types.StringValue(testRegion),
 			},
 			true,
 		},
@@ -160,7 +166,7 @@ func TestMapFields(t *testing.T) {
 				},
 			},
 			Model{
-				Id:                types.StringValue("pid,iid,cid"),
+				Id:                types.StringValue(fmt.Sprintf("pid,%s,iid,cid", testRegion)),
 				CredentialId:      types.StringValue("cid"),
 				InstanceId:        types.StringValue("iid"),
 				ProjectId:         types.StringValue("pid"),
@@ -172,6 +178,7 @@ func TestMapFields(t *testing.T) {
 				Uri:               types.StringNull(),
 				Username:          types.StringValue(""),
 				RotateWhenChanged: types.MapNull(types.StringType),
+				Region:            types.StringValue(testRegion),
 			},
 			true,
 		},
@@ -213,7 +220,7 @@ func TestMapFields(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.description, func(t *testing.T) {
-			err := mapFields(context.Background(), tt.input, &tt.state)
+			err := mapFields(context.Background(), tt.input, &tt.state, testRegion)
 			if !tt.isValid && err == nil {
 				t.Fatalf("Should have failed")
 			}
diff --git a/stackit/internal/services/mariadb/instance/datasource.go b/stackit/internal/services/mariadb/instance/datasource.go
index 6c666af04..381982ffa 100644
--- a/stackit/internal/services/mariadb/instance/datasource.go
+++ b/stackit/internal/services/mariadb/instance/datasource.go
@@ -18,7 +18,7 @@ import (
 	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/validate"
 
 	"github.com/hashicorp/terraform-plugin-framework/datasource/schema"
-	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api"
+	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api"
 )
 
 // Ensure the implementation satisfies the expected interfaces.
@@ -33,40 +33,43 @@ func NewInstanceDataSource() datasource.DataSource {
 
 // instanceDataSource is the data source implementation.
 type instanceDataSource struct {
-	client *mariadb.APIClient
+	client       *mariadb.APIClient
+	providerData core.ProviderData
 }
 
 // Metadata returns the data source type name.
-func (r *instanceDataSource) Metadata(_ context.Context, req datasource.MetadataRequest, resp *datasource.MetadataResponse) {
+func (d *instanceDataSource) Metadata(_ context.Context, req datasource.MetadataRequest, resp *datasource.MetadataResponse) {
 	resp.TypeName = req.ProviderTypeName + "_mariadb_instance"
 }
 
 // Configure adds the provider configured client to the data source.
-func (r *instanceDataSource) Configure(ctx context.Context, req datasource.ConfigureRequest, resp *datasource.ConfigureResponse) {
-	providerData, ok := conversion.ParseProviderData(ctx, req.ProviderData, &resp.Diagnostics)
+func (d *instanceDataSource) Configure(ctx context.Context, req datasource.ConfigureRequest, resp *datasource.ConfigureResponse) {
+	var ok bool
+	d.providerData, ok = conversion.ParseProviderData(ctx, req.ProviderData, &resp.Diagnostics)
 	if !ok {
 		return
 	}
 
-	apiClient := mariadbUtils.ConfigureClient(ctx, &providerData, &resp.Diagnostics)
+	apiClient := mariadbUtils.ConfigureClient(ctx, &d.providerData, &resp.Diagnostics)
 	if resp.Diagnostics.HasError() {
 		return
 	}
-	r.client = apiClient
+	d.client = apiClient
 	tflog.Info(ctx, "MariaDB instance client configured")
 }
 
 // Schema defines the schema for the data source.
-func (r *instanceDataSource) Schema(_ context.Context, _ datasource.SchemaRequest, resp *datasource.SchemaResponse) {
+func (d *instanceDataSource) Schema(_ context.Context, _ datasource.SchemaRequest, resp *datasource.SchemaResponse) {
 	descriptions := map[string]string{
 		"main":        "MariaDB instance data source schema. Must have a `region` specified in the provider configuration.",
-		"id":          "Terraform's internal data source. identifier. It is structured as \"`project_id`,`instance_id`\".",
+		"id":          "Terraform's internal data source. identifier. It is structured as \"`project_id`,`region`,`instance_id`\".",
 		"instance_id": "ID of the MariaDB instance.",
 		"project_id":  "STACKIT Project ID to which the instance is associated.",
 		"name":        "Instance name.",
 		"version":     "The service version.",
 		"plan_name":   "The selected plan name.",
 		"plan_id":     "The selected plan ID.",
+		"region":      "The resource region. If not defined, the provider region is used.",
 	}
 
 	parametersDescriptions := map[string]string{
@@ -171,12 +174,18 @@ func (r *instanceDataSource) Schema(_ context.Context, _ datasource.SchemaReques
 			"cf_organization_guid": schema.StringAttribute{
 				Computed: true,
 			},
+			"region": schema.StringAttribute{
+				Optional: true,
+				// must be computed to allow for storing the override value from the provider
+				Computed:    true,
+				Description: descriptions["region"],
+			},
 		},
 	}
 }
 
 // Read refreshes the Terraform state with the latest data.
-func (r *instanceDataSource) Read(ctx context.Context, req datasource.ReadRequest, resp *datasource.ReadResponse) { // nolint:gocritic // function signature required by Terraform
+func (d *instanceDataSource) Read(ctx context.Context, req datasource.ReadRequest, resp *datasource.ReadResponse) { // nolint:gocritic // function signature required by Terraform
 	var model Model
 	diags := req.Config.Get(ctx, &model)
 	resp.Diagnostics.Append(diags...)
@@ -187,11 +196,13 @@ func (r *instanceDataSource) Read(ctx context.Context, req datasource.ReadReques
 	ctx = core.InitProviderContext(ctx)
 
 	projectId := model.ProjectId.ValueString()
+	region := d.providerData.GetRegionWithOverride(model.Region)
 	instanceId := model.InstanceId.ValueString()
 	ctx = tflog.SetField(ctx, "project_id", projectId)
+	ctx = tflog.SetField(ctx, "region", region)
 	ctx = tflog.SetField(ctx, "instance_id", instanceId)
 
-	instanceResp, err := r.client.DefaultAPI.GetInstance(ctx, projectId, instanceId).Execute()
+	instanceResp, err := d.client.DefaultAPI.GetInstance(ctx, projectId, region, instanceId).Execute()
 	if err != nil {
 		utils.LogError(
 			ctx,
@@ -210,14 +221,14 @@ func (r *instanceDataSource) Read(ctx context.Context, req datasource.ReadReques
 
 	ctx = core.LogResponse(ctx)
 
-	err = mapFields(instanceResp, &model)
+	err = mapFields(instanceResp, &model, region)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error reading instance", fmt.Sprintf("Processing API payload: %v", err))
 		return
 	}
 
 	// Compute and store values not present in the API response
-	err = loadPlanNameAndVersion(ctx, r.client, &model)
+	err = loadPlanNameAndVersion(ctx, d.client, &model, region)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error reading instance", fmt.Sprintf("Loading service plan details: %v", err))
 		return
diff --git a/stackit/internal/services/mariadb/instance/resource.go b/stackit/internal/services/mariadb/instance/resource.go
index 51f763938..5de676dfc 100644
--- a/stackit/internal/services/mariadb/instance/resource.go
+++ b/stackit/internal/services/mariadb/instance/resource.go
@@ -27,8 +27,8 @@ import (
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/stringplanmodifier"
 	"github.com/hashicorp/terraform-plugin-framework/types"
 	"github.com/stackitcloud/stackit-sdk-go/core/oapierror"
-	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api"
-	"github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api/wait"
+	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api"
+	"github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api/wait"
 )
 
 // Ensure the implementation satisfies the expected interfaces.
@@ -36,6 +36,7 @@ var (
 	_ resource.Resource                = &instanceResource{}
 	_ resource.ResourceWithConfigure   = &instanceResource{}
 	_ resource.ResourceWithImportState = &instanceResource{}
+	_ resource.ResourceWithModifyPlan  = &instanceResource{}
 )
 
 type Model struct {
@@ -52,6 +53,7 @@ type Model struct {
 	Version            types.String `tfsdk:"version"`
 	PlanName           types.String `tfsdk:"plan_name"`
 	PlanId             types.String `tfsdk:"plan_id"`
+	Region             types.String `tfsdk:"region"`
 }
 
 // Struct corresponding to DataSourceModel.Parameters
@@ -85,7 +87,8 @@ func NewInstanceResource() resource.Resource {
 
 // instanceResource is the resource implementation.
 type instanceResource struct {
-	client *mariadb.APIClient
+	client       *mariadb.APIClient
+	providerData core.ProviderData
 }
 
 // Metadata returns the resource type name.
@@ -95,12 +98,13 @@ func (r *instanceResource) Metadata(_ context.Context, req resource.MetadataRequ
 
 // Configure adds the provider configured client to the resource.
 func (r *instanceResource) Configure(ctx context.Context, req resource.ConfigureRequest, resp *resource.ConfigureResponse) {
-	providerData, ok := conversion.ParseProviderData(ctx, req.ProviderData, &resp.Diagnostics)
+	var ok bool
+	r.providerData, ok = conversion.ParseProviderData(ctx, req.ProviderData, &resp.Diagnostics)
 	if !ok {
 		return
 	}
 
-	apiClient := mariadbUtils.ConfigureClient(ctx, &providerData, &resp.Diagnostics)
+	apiClient := mariadbUtils.ConfigureClient(ctx, &r.providerData, &resp.Diagnostics)
 	if resp.Diagnostics.HasError() {
 		return
 	}
@@ -108,11 +112,41 @@ func (r *instanceResource) Configure(ctx context.Context, req resource.Configure
 	tflog.Info(ctx, "MariaDB instance client configured")
 }
 
+// ModifyPlan implements resource.ResourceWithModifyPlan.
+// Use the modifier to set the effective region in the current plan.
+func (r *instanceResource) ModifyPlan(ctx context.Context, req resource.ModifyPlanRequest, resp *resource.ModifyPlanResponse) { // nolint:gocritic // function signature required by Terraform
+	var configModel Model
+	// skip initial empty configuration to avoid follow-up errors
+	if req.Config.Raw.IsNull() {
+		return
+	}
+	resp.Diagnostics.Append(req.Config.Get(ctx, &configModel)...)
+	if resp.Diagnostics.HasError() {
+		return
+	}
+
+	var planModel Model
+	resp.Diagnostics.Append(req.Plan.Get(ctx, &planModel)...)
+	if resp.Diagnostics.HasError() {
+		return
+	}
+
+	utils.AdaptRegion(ctx, configModel.Region, &planModel.Region, r.providerData.GetRegion(), resp)
+	if resp.Diagnostics.HasError() {
+		return
+	}
+
+	resp.Diagnostics.Append(resp.Plan.Set(ctx, planModel)...)
+	if resp.Diagnostics.HasError() {
+		return
+	}
+}
+
 // Schema defines the schema for the resource.
 func (r *instanceResource) Schema(_ context.Context, _ resource.SchemaRequest, resp *resource.SchemaResponse) {
 	descriptions := map[string]string{
 		"main":        "MariaDB instance resource schema. Must have a `region` specified in the provider configuration.",
-		"id":          "Terraform's internal resource ID. It is structured as \"`project_id`,`instance_id`\".",
+		"id":          "Terraform's internal resource ID. It is structured as \"`project_id`,`region`,`instance_id`\".",
 		"instance_id": "ID of the MariaDB instance.",
 		"project_id":  "STACKIT project ID to which the instance is associated.",
 		"name":        "Instance name.",
@@ -120,6 +154,7 @@ func (r *instanceResource) Schema(_ context.Context, _ resource.SchemaRequest, r
 		"plan_name":   "The selected plan name.",
 		"plan_id":     "The selected plan ID.",
 		"parameters":  "Configuration parameters. Please note that removing a previously configured field from your Terraform configuration won't replace its value in the API. To update a previously configured field, explicitly set a new value for it.",
+		"region":      "The resource region. If not defined, the provider region is used.",
 	}
 
 	parametersDescriptions := map[string]string{
@@ -271,6 +306,15 @@ func (r *instanceResource) Schema(_ context.Context, _ resource.SchemaRequest, r
 					stringplanmodifier.UseStateForUnknown(),
 				},
 			},
+			"region": schema.StringAttribute{
+				Optional: true,
+				// must be computed to allow for storing the override value from the provider
+				Computed:    true,
+				Description: descriptions["region"],
+				PlanModifiers: []planmodifier.String{
+					stringplanmodifier.RequiresReplace(),
+				},
+			},
 		},
 	}
 }
@@ -287,7 +331,9 @@ func (r *instanceResource) Create(ctx context.Context, req resource.CreateReques
 	ctx = core.InitProviderContext(ctx)
 
 	projectId := model.ProjectId.ValueString()
+	region := r.providerData.GetRegionWithOverride(model.Region)
 	ctx = tflog.SetField(ctx, "project_id", projectId)
+	ctx = tflog.SetField(ctx, "region", region)
 
 	var parameters *parametersModel
 	if !(model.Parameters.IsNull() || model.Parameters.IsUnknown()) {
@@ -299,7 +345,7 @@ func (r *instanceResource) Create(ctx context.Context, req resource.CreateReques
 		}
 	}
 
-	err := r.loadPlanId(ctx, &model)
+	err := r.loadPlanId(ctx, &model, region)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error creating instance", fmt.Sprintf("Loading service plan: %v", err))
 		return
@@ -312,7 +358,7 @@ func (r *instanceResource) Create(ctx context.Context, req resource.CreateReques
 		return
 	}
 	// Create new instance
-	createResp, err := r.client.DefaultAPI.CreateInstance(ctx, projectId).CreateInstancePayload(*payload).Execute()
+	createResp, err := r.client.DefaultAPI.CreateInstance(ctx, projectId, region).CreateInstancePayload(*payload).Execute()
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error creating instance", fmt.Sprintf("Calling API: %v", err))
 		return
@@ -329,6 +375,7 @@ func (r *instanceResource) Create(ctx context.Context, req resource.CreateReques
 	// Write id attributes to state before polling via the wait handler - just in case anything goes wrong during the wait handler
 	ctx = utils.SetAndLogStateFields(ctx, &resp.Diagnostics, &resp.State, map[string]any{
 		"project_id":  projectId,
+		"region":      region,
 		"instance_id": instanceId,
 	})
 	if resp.Diagnostics.HasError() {
@@ -336,14 +383,14 @@ func (r *instanceResource) Create(ctx context.Context, req resource.CreateReques
 	}
 
 	ctx = tflog.SetField(ctx, "instance_id", instanceId)
-	waitResp, err := wait.CreateInstanceWaitHandler(ctx, r.client.DefaultAPI, projectId, instanceId).WaitWithContext(ctx)
+	waitResp, err := wait.CreateInstanceWaitHandler(ctx, r.client.DefaultAPI, projectId, region, instanceId).WaitWithContext(ctx)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error creating instance", fmt.Sprintf("Instance creation waiting: %v", err))
 		return
 	}
 
 	// Map response body to schema
-	err = mapFields(waitResp, &model)
+	err = mapFields(waitResp, &model, region)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error creating instance", fmt.Sprintf("Processing API payload: %v", err))
 		return
@@ -370,6 +417,7 @@ func (r *instanceResource) Read(ctx context.Context, req resource.ReadRequest, r
 	ctx = core.InitProviderContext(ctx)
 
 	projectId := model.ProjectId.ValueString()
+	region := r.providerData.GetRegionWithOverride(model.Region)
 	instanceId := model.InstanceId.ValueString()
 	if instanceId == "" {
 		// Resource not yet created; ID is unknown.
@@ -377,9 +425,10 @@ func (r *instanceResource) Read(ctx context.Context, req resource.ReadRequest, r
 		return
 	}
 	ctx = tflog.SetField(ctx, "project_id", projectId)
+	ctx = tflog.SetField(ctx, "region", region)
 	ctx = tflog.SetField(ctx, "instance_id", instanceId)
 
-	instanceResp, err := r.client.DefaultAPI.GetInstance(ctx, projectId, instanceId).Execute()
+	instanceResp, err := r.client.DefaultAPI.GetInstance(ctx, projectId, region, instanceId).Execute()
 	if err != nil {
 		var oapiErr *oapierror.GenericOpenAPIError
 		if errors.As(err, &oapiErr) && (oapiErr.StatusCode == http.StatusNotFound || oapiErr.StatusCode == http.StatusGone) {
@@ -393,14 +442,14 @@ func (r *instanceResource) Read(ctx context.Context, req resource.ReadRequest, r
 	ctx = core.LogResponse(ctx)
 
 	// Map response body to schema
-	err = mapFields(instanceResp, &model)
+	err = mapFields(instanceResp, &model, region)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error reading instance", fmt.Sprintf("Processing API payload: %v", err))
 		return
 	}
 
 	// Compute and store values not present in the API response
-	err = loadPlanNameAndVersion(ctx, r.client, &model)
+	err = loadPlanNameAndVersion(ctx, r.client, &model, region)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error reading instance", fmt.Sprintf("Loading service plan details: %v", err))
 		return
@@ -427,8 +476,10 @@ func (r *instanceResource) Update(ctx context.Context, req resource.UpdateReques
 	ctx = core.InitProviderContext(ctx)
 
 	projectId := model.ProjectId.ValueString()
+	region := r.providerData.GetRegionWithOverride(model.Region)
 	instanceId := model.InstanceId.ValueString()
 	ctx = tflog.SetField(ctx, "project_id", projectId)
+	ctx = tflog.SetField(ctx, "region", region)
 	ctx = tflog.SetField(ctx, "instance_id", instanceId)
 
 	var parameters *parametersModel
@@ -441,7 +492,7 @@ func (r *instanceResource) Update(ctx context.Context, req resource.UpdateReques
 		}
 	}
 
-	err := r.loadPlanId(ctx, &model)
+	err := r.loadPlanId(ctx, &model, region)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error updating instance", fmt.Sprintf("Loading service plan: %v", err))
 		return
@@ -454,7 +505,7 @@ func (r *instanceResource) Update(ctx context.Context, req resource.UpdateReques
 		return
 	}
 	// Update existing instance
-	err = r.client.DefaultAPI.PartialUpdateInstance(ctx, projectId, instanceId).PartialUpdateInstancePayload(*payload).Execute()
+	err = r.client.DefaultAPI.PartialUpdateInstance(ctx, projectId, region, instanceId).PartialUpdateInstancePayload(*payload).Execute()
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error updating instance", fmt.Sprintf("Calling API: %v", err))
 		return
@@ -462,14 +513,14 @@ func (r *instanceResource) Update(ctx context.Context, req resource.UpdateReques
 
 	ctx = core.LogResponse(ctx)
 
-	waitResp, err := wait.PartialUpdateInstanceWaitHandler(ctx, r.client.DefaultAPI, projectId, instanceId).WaitWithContext(ctx)
+	waitResp, err := wait.PartialUpdateInstanceWaitHandler(ctx, r.client.DefaultAPI, projectId, region, instanceId).WaitWithContext(ctx)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error updating instance", fmt.Sprintf("Instance update waiting: %v", err))
 		return
 	}
 
 	// Map response body to schema
-	err = mapFields(waitResp, &model)
+	err = mapFields(waitResp, &model, region)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error updating instance", fmt.Sprintf("Processing API payload: %v", err))
 		return
@@ -496,12 +547,14 @@ func (r *instanceResource) Delete(ctx context.Context, req resource.DeleteReques
 	ctx = core.InitProviderContext(ctx)
 
 	projectId := model.ProjectId.ValueString()
+	region := r.providerData.GetRegionWithOverride(model.Region)
 	instanceId := model.InstanceId.ValueString()
 	ctx = tflog.SetField(ctx, "project_id", projectId)
+	ctx = tflog.SetField(ctx, "region", region)
 	ctx = tflog.SetField(ctx, "instance_id", instanceId)
 
 	// Delete existing instance
-	err := r.client.DefaultAPI.DeleteInstance(ctx, projectId, instanceId).Execute()
+	err := r.client.DefaultAPI.DeleteInstance(ctx, projectId, region, instanceId).Execute()
 	if err != nil {
 		var oapiErr *oapierror.GenericOpenAPIError
 		if errors.As(err, &oapiErr) && oapiErr.StatusCode == http.StatusNotFound {
@@ -514,7 +567,7 @@ func (r *instanceResource) Delete(ctx context.Context, req resource.DeleteReques
 
 	ctx = core.LogResponse(ctx)
 
-	_, err = wait.DeleteInstanceWaitHandler(ctx, r.client.DefaultAPI, projectId, instanceId).WaitWithContext(ctx)
+	_, err = wait.DeleteInstanceWaitHandler(ctx, r.client.DefaultAPI, projectId, region, instanceId).WaitWithContext(ctx)
 	if err != nil {
 		core.LogAndAddError(ctx, &resp.Diagnostics, "Error deleting instance", fmt.Sprintf("Instance deletion waiting: %v", err))
 		return
@@ -523,26 +576,27 @@ func (r *instanceResource) Delete(ctx context.Context, req resource.DeleteReques
 }
 
 // ImportState imports a resource into the Terraform state on success.
-// The expected format of the resource import identifier is: project_id,instance_id
+// The expected format of the resource import identifier is: project_id,region,instance_id
 func (r *instanceResource) ImportState(ctx context.Context, req resource.ImportStateRequest, resp *resource.ImportStateResponse) {
 	idParts := strings.Split(req.ID, core.Separator)
 
-	if len(idParts) != 2 || idParts[0] == "" || idParts[1] == "" {
+	if len(idParts) != 3 || idParts[0] == "" || idParts[1] == "" || idParts[2] == "" {
 		core.LogAndAddError(ctx, &resp.Diagnostics,
 			"Error importing instance",
-			fmt.Sprintf("Expected import identifier with format: [project_id],[instance_id]  Got: %q", req.ID),
+			fmt.Sprintf("Expected import identifier with format: [project_id],[region],[instance_id]  Got: %q", req.ID),
 		)
 		return
 	}
 
 	ctx = utils.SetAndLogStateFields(ctx, &resp.Diagnostics, &resp.State, map[string]any{
 		"project_id":  idParts[0],
-		"instance_id": idParts[1],
+		"region":      idParts[1],
+		"instance_id": idParts[2],
 	})
 	tflog.Info(ctx, "MariaDB instance state imported")
 }
 
-func mapFields(instance *mariadb.Instance, model *Model) error {
+func mapFields(instance *mariadb.Instance, model *Model, region string) error {
 	if instance == nil {
 		return fmt.Errorf("response input is nil")
 	}
@@ -559,7 +613,8 @@ func mapFields(instance *mariadb.Instance, model *Model) error {
 		return fmt.Errorf("instance id not present")
 	}
 
-	model.Id = utils.BuildInternalTerraformId(model.ProjectId.ValueString(), instanceId)
+	model.Id = utils.BuildInternalTerraformId(model.ProjectId.ValueString(), region, instanceId)
+	model.Region = types.StringValue(region)
 	model.InstanceId = types.StringValue(instanceId)
 	model.PlanId = types.StringValue(instance.PlanId)
 	model.CfGuid = types.StringValue(instance.CfGuid)
@@ -724,9 +779,9 @@ func toInstanceParams(parameters *parametersModel) (*mariadb.InstanceParameters,
 	return payloadParams, nil
 }
 
-func (r *instanceResource) loadPlanId(ctx context.Context, model *Model) error {
+func (r *instanceResource) loadPlanId(ctx context.Context, model *Model, region string) error {
 	projectId := model.ProjectId.ValueString()
-	res, err := r.client.DefaultAPI.ListOfferings(ctx, projectId).Execute()
+	res, err := r.client.DefaultAPI.ListOfferings(ctx, projectId, region).Execute()
 	if err != nil {
 		return fmt.Errorf("getting MariaDB offerings: %w", err)
 	}
@@ -761,10 +816,10 @@ func (r *instanceResource) loadPlanId(ctx context.Context, model *Model) error {
 	return fmt.Errorf("couldn't find plan_name '%s' for version %s, available names are: %s", planName, version, availablePlanNames)
 }
 
-func loadPlanNameAndVersion(ctx context.Context, client *mariadb.APIClient, model *Model) error {
+func loadPlanNameAndVersion(ctx context.Context, client *mariadb.APIClient, model *Model, region string) error {
 	projectId := model.ProjectId.ValueString()
 	planId := model.PlanId.ValueString()
-	res, err := client.DefaultAPI.ListOfferings(ctx, projectId).Execute()
+	res, err := client.DefaultAPI.ListOfferings(ctx, projectId, region).Execute()
 	if err != nil {
 		return fmt.Errorf("getting MariaDB offerings: %w", err)
 	}
diff --git a/stackit/internal/services/mariadb/instance/resource_test.go b/stackit/internal/services/mariadb/instance/resource_test.go
index cced777f4..715d9408d 100644
--- a/stackit/internal/services/mariadb/instance/resource_test.go
+++ b/stackit/internal/services/mariadb/instance/resource_test.go
@@ -2,15 +2,18 @@ package mariadb
 
 import (
 	"context"
+	"fmt"
 	"testing"
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/hashicorp/terraform-plugin-framework/attr"
 	"github.com/hashicorp/terraform-plugin-framework/types"
 	"github.com/hashicorp/terraform-plugin-framework/types/basetypes"
-	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api"
+	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api"
 )
 
+const testRegion = "eu02"
+
 var fixtureModelParameters = types.ObjectValueMust(parametersTypes, map[string]attr.Value{
 	"sgw_acl":                types.StringValue("acl"),
 	"enable_monitoring":      types.BoolValue(true),
@@ -58,7 +61,7 @@ func TestMapFields(t *testing.T) {
 			"default_values",
 			&mariadb.Instance{},
 			Model{
-				Id:                 types.StringValue("pid,iid"),
+				Id:                 types.StringValue(fmt.Sprintf("pid,%s,iid", testRegion)),
 				InstanceId:         types.StringValue("iid"),
 				ProjectId:          types.StringValue("pid"),
 				PlanId:             types.StringValue(""),
@@ -69,6 +72,7 @@ func TestMapFields(t *testing.T) {
 				ImageUrl:           types.StringValue(""),
 				CfOrganizationGuid: types.StringValue(""),
 				Parameters:         types.ObjectNull(parametersTypes),
+				Region:             types.StringValue(testRegion),
 			},
 			true,
 		},
@@ -95,7 +99,7 @@ func TestMapFields(t *testing.T) {
 				},
 			},
 			Model{
-				Id:                 types.StringValue("pid,iid"),
+				Id:                 types.StringValue(fmt.Sprintf("pid,%s,iid", testRegion)),
 				InstanceId:         types.StringValue("iid"),
 				ProjectId:          types.StringValue("pid"),
 				PlanId:             types.StringValue("plan"),
@@ -106,6 +110,7 @@ func TestMapFields(t *testing.T) {
 				ImageUrl:           types.StringValue("image"),
 				CfOrganizationGuid: types.StringValue("org"),
 				Parameters:         fixtureModelParameters,
+				Region:             types.StringValue(testRegion),
 			},
 			true,
 		},
@@ -148,7 +153,7 @@ func TestMapFields(t *testing.T) {
 				ProjectId:  tt.expected.ProjectId,
 				InstanceId: tt.expected.InstanceId,
 			}
-			err := mapFields(tt.input, state)
+			err := mapFields(tt.input, state, testRegion)
 			if !tt.isValid && err == nil {
 				t.Fatalf("Should have failed")
 			}
diff --git a/stackit/internal/services/mariadb/mariadb_acc_test.go b/stackit/internal/services/mariadb/mariadb_acc_test.go
index 8ca209c2c..463d8670e 100644
--- a/stackit/internal/services/mariadb/mariadb_acc_test.go
+++ b/stackit/internal/services/mariadb/mariadb_acc_test.go
@@ -13,8 +13,8 @@ import (
 	"github.com/hashicorp/terraform-plugin-testing/helper/resource"
 	"github.com/hashicorp/terraform-plugin-testing/terraform"
 	"github.com/stackitcloud/stackit-sdk-go/core/utils"
-	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api"
-	"github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api/wait"
+	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api"
+	"github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api/wait"
 
 	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/core"
 	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/testutil"
@@ -30,7 +30,7 @@ var testConfigVarsMin = config.Variables{
 	"project_id": config.StringVariable(testutil.ProjectId),
 	"name":       config.StringVariable(fmt.Sprintf("tf-acc-%s", acctest.RandStringFromCharSet(7, acctest.CharSetAlphaNum))),
 	"plan_name":  config.StringVariable("stackit-mariadb-1.4.10-single"),
-	"db_version": config.StringVariable("10.6"),
+	"db_version": config.StringVariable("10.11"),
 }
 
 var testConfigVarsMax = config.Variables{
@@ -159,11 +159,15 @@ func TestAccMariaDbResourceMin(t *testing.T) {
 					if !ok {
 						return "", fmt.Errorf("couldn't find resource stackit_mariadb_instance.instance")
 					}
+					region, ok := r.Primary.Attributes["region"]
+					if !ok {
+						return "", fmt.Errorf("couldn't find attribute region")
+					}
 					instanceId, ok := r.Primary.Attributes["instance_id"]
 					if !ok {
 						return "", fmt.Errorf("couldn't find attribute instance_id")
 					}
-					return fmt.Sprintf("%s,%s", testutil.ProjectId, instanceId), nil
+					return fmt.Sprintf("%s,%s,%s", testutil.ProjectId, region, instanceId), nil
 				},
 				ImportState:       true,
 				ImportStateVerify: true,
@@ -176,6 +180,10 @@ func TestAccMariaDbResourceMin(t *testing.T) {
 					if !ok {
 						return "", fmt.Errorf("couldn't find resource stackit_mariadb_credential.credential")
 					}
+					region, ok := r.Primary.Attributes["region"]
+					if !ok {
+						return "", fmt.Errorf("couldn't find attribute region")
+					}
 					instanceId, ok := r.Primary.Attributes["instance_id"]
 					if !ok {
 						return "", fmt.Errorf("couldn't find attribute instance_id")
@@ -184,7 +192,7 @@ func TestAccMariaDbResourceMin(t *testing.T) {
 					if !ok {
 						return "", fmt.Errorf("couldn't find attribute credential_id")
 					}
-					return fmt.Sprintf("%s,%s,%s", testutil.ProjectId, instanceId, credentialId), nil
+					return fmt.Sprintf("%s,%s,%s,%s", testutil.ProjectId, region, instanceId, credentialId), nil
 				},
 				ImportState:       true,
 				ImportStateVerify: true,
@@ -320,11 +328,15 @@ func TestAccMariaDbResourceMax(t *testing.T) {
 					if !ok {
 						return "", fmt.Errorf("couldn't find resource stackit_mariadb_instance.instance")
 					}
+					region, ok := r.Primary.Attributes["region"]
+					if !ok {
+						return "", fmt.Errorf("couldn't find attribute region")
+					}
 					instanceId, ok := r.Primary.Attributes["instance_id"]
 					if !ok {
 						return "", fmt.Errorf("couldn't find attribute instance_id")
 					}
-					return fmt.Sprintf("%s,%s", testutil.ProjectId, instanceId), nil
+					return fmt.Sprintf("%s,%s,%s", testutil.ProjectId, region, instanceId), nil
 				},
 				ImportState:       true,
 				ImportStateVerify: true,
@@ -337,6 +349,10 @@ func TestAccMariaDbResourceMax(t *testing.T) {
 					if !ok {
 						return "", fmt.Errorf("couldn't find resource stackit_mariadb_credential.credential")
 					}
+					region, ok := r.Primary.Attributes["region"]
+					if !ok {
+						return "", fmt.Errorf("couldn't find attribute region")
+					}
 					instanceId, ok := r.Primary.Attributes["instance_id"]
 					if !ok {
 						return "", fmt.Errorf("couldn't find attribute instance_id")
@@ -345,7 +361,7 @@ func TestAccMariaDbResourceMax(t *testing.T) {
 					if !ok {
 						return "", fmt.Errorf("couldn't find attribute credential_id")
 					}
-					return fmt.Sprintf("%s,%s,%s", testutil.ProjectId, instanceId, credentialId), nil
+					return fmt.Sprintf("%s,%s,%s,%s", testutil.ProjectId, region, instanceId, credentialId), nil
 				},
 				ImportState:       true,
 				ImportStateVerify: true,
@@ -408,7 +424,7 @@ func TestAccMariaDbResourceMax(t *testing.T) {
 
 func testAccCheckMariaDBDestroy(s *terraform.State) error {
 	ctx := context.Background()
-	client, err := mariadb.NewAPIClient(testutil.NewConfigBuilder().BuildClientOptions(testutil.MariaDBCustomEndpoint, true)...)
+	client, err := mariadb.NewAPIClient(testutil.NewConfigBuilder().BuildClientOptions(testutil.MariaDBCustomEndpoint, false)...)
 	if err != nil {
 		return fmt.Errorf("creating client: %w", err)
 	}
@@ -418,12 +434,12 @@ func testAccCheckMariaDBDestroy(s *terraform.State) error {
 		if rs.Type != "stackit_mariadb_instance" {
 			continue
 		}
-		// instance terraform ID: "[project_id],[instance_id]"
-		instanceId := strings.Split(rs.Primary.ID, core.Separator)[1]
+		// instance terraform ID: "[project_id],[region],[instance_id]"
+		instanceId := strings.Split(rs.Primary.ID, core.Separator)[2]
 		instancesToDestroy = append(instancesToDestroy, instanceId)
 	}
 
-	instancesResp, err := client.DefaultAPI.ListInstances(ctx, testutil.ProjectId).Execute()
+	instancesResp, err := client.DefaultAPI.ListInstances(ctx, testutil.ProjectId, testutil.Region).Execute()
 	if err != nil {
 		return fmt.Errorf("getting instancesResp: %w", err)
 	}
@@ -435,11 +451,11 @@ func testAccCheckMariaDBDestroy(s *terraform.State) error {
 		}
 		if utils.Contains(instancesToDestroy, *instances[i].InstanceId) {
 			if !checkInstanceDeleteSuccess(&instances[i]) {
-				err := client.DefaultAPI.DeleteInstance(ctx, testutil.ProjectId, *instances[i].InstanceId).Execute()
+				err := client.DefaultAPI.DeleteInstance(ctx, testutil.ProjectId, testutil.Region, *instances[i].InstanceId).Execute()
 				if err != nil {
 					return fmt.Errorf("destroying instance %s during CheckDestroy: %w", *instances[i].InstanceId, err)
 				}
-				_, err = wait.DeleteInstanceWaitHandler(ctx, client.DefaultAPI, testutil.ProjectId, *instances[i].InstanceId).WaitWithContext(ctx)
+				_, err = wait.DeleteInstanceWaitHandler(ctx, client.DefaultAPI, testutil.ProjectId, testutil.Region, *instances[i].InstanceId).WaitWithContext(ctx)
 				if err != nil {
 					return fmt.Errorf("destroying instance %s during CheckDestroy: waiting for deletion %w", *instances[i].InstanceId, err)
 				}
diff --git a/stackit/internal/services/mariadb/mariadb_test.go b/stackit/internal/services/mariadb/mariadb_test.go
index 2a1e93548..eaf8c5b80 100644
--- a/stackit/internal/services/mariadb/mariadb_test.go
+++ b/stackit/internal/services/mariadb/mariadb_test.go
@@ -8,7 +8,7 @@ import (
 
 	"github.com/google/uuid"
 	"github.com/hashicorp/terraform-plugin-testing/helper/resource"
-	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api"
+	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api"
 
 	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/testutil"
 )
@@ -87,7 +87,7 @@ resource "stackit_mariadb_instance" "example" {
 						testutil.MockResponse{
 							Description: "refresh",
 							Handler: func(w http.ResponseWriter, req *http.Request) {
-								expected := fmt.Sprintf("/v1/projects/%s/instances/%s", projectId, instanceId)
+								expected := fmt.Sprintf("/v2/projects/%s/regions/%s/instances/%s", projectId, region, instanceId)
 								if req.URL.Path != expected {
 									t.Errorf("expected request to %s, got %s", expected, req.URL.Path)
 								}
@@ -157,7 +157,7 @@ resource "stackit_mariadb_credential" "example" {
 						testutil.MockResponse{
 							Description: "refresh",
 							Handler: func(w http.ResponseWriter, req *http.Request) {
-								expected := fmt.Sprintf("/v1/projects/%s/instances/%s/credentials/%s", projectId, instanceId, credentialId)
+								expected := fmt.Sprintf("/v2/projects/%s/regions/%s/instances/%s/credentials/%s", projectId, region, instanceId, credentialId)
 								if req.URL.Path != expected {
 									t.Errorf("expected request to %s, got %s", expected, req.URL.Path)
 								}
diff --git a/stackit/internal/services/mariadb/utils/util.go b/stackit/internal/services/mariadb/utils/util.go
index 0293947c7..f0217eb0a 100644
--- a/stackit/internal/services/mariadb/utils/util.go
+++ b/stackit/internal/services/mariadb/utils/util.go
@@ -6,7 +6,7 @@ import (
 
 	"github.com/hashicorp/terraform-plugin-framework/diag"
 	"github.com/stackitcloud/stackit-sdk-go/core/config"
-	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api"
+	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api"
 
 	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/core"
 	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/utils"
@@ -19,9 +19,8 @@ func ConfigureClient(ctx context.Context, providerData *core.ProviderData, diags
 	}
 	if providerData.MariaDBCustomEndpoint != "" {
 		apiClientConfigOptions = append(apiClientConfigOptions, config.WithEndpoint(providerData.MariaDBCustomEndpoint))
-	} else {
-		apiClientConfigOptions = append(apiClientConfigOptions, config.WithRegion(providerData.GetRegion()))
 	}
+
 	apiClient, err := mariadb.NewAPIClient(apiClientConfigOptions...)
 	if err != nil {
 		core.LogAndAddError(ctx, diags, "Error configuring API client", fmt.Sprintf("Configuring client: %v. This is an error related to the provider configuration, not to the resource configuration", err))
diff --git a/stackit/internal/services/mariadb/utils/util_test.go b/stackit/internal/services/mariadb/utils/util_test.go
index 8ae0d8bb9..3d3223c2f 100644
--- a/stackit/internal/services/mariadb/utils/util_test.go
+++ b/stackit/internal/services/mariadb/utils/util_test.go
@@ -9,7 +9,7 @@ import (
 	"github.com/hashicorp/terraform-plugin-framework/diag"
 	sdkClients "github.com/stackitcloud/stackit-sdk-go/core/clients"
 	"github.com/stackitcloud/stackit-sdk-go/core/config"
-	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v1api"
+	mariadb "github.com/stackitcloud/stackit-sdk-go/services/mariadb/v2api"
 
 	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/core"
 	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/utils"
@@ -46,7 +46,6 @@ func TestConfigureClient(t *testing.T) {
 			},
 			expected: func() *mariadb.APIClient {
 				apiClient, err := mariadb.NewAPIClient(
-					config.WithRegion("eu01"),
 					utils.UserAgentConfigOption(testVersion),
 				)
 				if err != nil {