Allow Vendor / Devloper access my Resources

Hi! It depends on what kind of access you want to grant, but most Azure services supports the RBAC feature. https://docs.microsoft.com/en-us/azure/security/azure-security-identity-management-best-practices#use-role-based-access-control-rbac By inviting the developers to you Azure AD as guests, you will be able to grant/revoke management access to services