https://techcrunch.com/2019/04/10/google-cloud-adds-a-managed-service-for-microsofts-active-directory/

Love it or hate it, Microsoft’s Active Directory remains one of the most-used identity services in the enterprise. Google’s Cloud Platform has long allowed you to manually set up an Active Directory deployment, but today, Google is taking this a step further by announcing the beta of a managed service. As the name implies, Google will manage this service for you and automate everything from server maintenance to security configurations.

Unsurprisingly, given Google’s recent focus on hybrid-cloud deployments, you also can use this service to extend your existing on-premises Active Directory domains to the cloud.