Azure Backend

azure-backend now manages Azure Storage remote state

The azure-backend experiment now enables functional Terragrunt support for the Azure Storage (azurerm) remote-state backend.

When the experiment is enabled, Terragrunt can bootstrap the resource group, storage account, and blob container used by remote_state { backend = "azurerm" }, detect whether the backend needs bootstrapping, converge blob versioning and soft-delete settings, delete state blobs or containers, and migrate state blobs within the same storage account.

Terragrunt-only settings such as location, the storage account SKU options, the skip_* flags, enable_soft_delete, soft_delete_retention_days, and msi_resource_id are consumed by Terragrunt and removed before it runs OpenTofu/Terraform with init -backend-config, so the underlying azurerm backend receives only keys it understands. msi_resource_id is not bootstrap-only: it also selects the managed identity used for delete and migrate.

This remains opt-in while the experiment is active:

terragrunt --experiment azure-backend run -- plan

Thanks to @omattsson for driving this support forward.