New resource to manage application extension properties

[phenixdotnet]

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Description

Add a new resource to allow management of extension properties. In Azure AD (B2C), extension properties are linked to an application and allow developers to add data to an user. This is particularly useful when working with Azure AD B2C and Trust Framework.

New or Affected Resource(s)

• azuread_application_extension_property

Potential Terraform Configuration

resource "azuread_application" "example" {
  display_name     = "example"
}

resource "azuread_application_extension_property" {
   application_id = azuread_application.example.id

   name = "my_custom_extension_property"
   data_type = "String"
   target_objects = "Users"
}

References

• MS Graph documentation about extension properties: https://docs.microsoft.com/en-us/graph/api/application-list-extensionproperty?view=graph-rest-1.0&tabs=http
• Hamilton SDK already support it: https://github.com/manicminer/hamilton/blob/main/msgraph/applications.go#L525

If this looks acceptable, I'm ready to have a look at it and submit a PR