Terraform AzureRM provider 4.0 adds provider-defined functions

HashiCorp has released version 4.0 of its Terraform AzureRM provider, which includes support for provider-defined functions and improved resource provider registration. The new release also adds two Azure-specific provider functions to help users correct the casing of their resource IDs or access individual components of it. Additionally, users now have more control over which providers to automatically register or whether to continue managing a subscription's resource provider registrations outside of Terraform.