By federating Active Directory with Cloud Identity or Google Workspace (see the associated article), you can enable users from your existing Active Directory domains to authenticate and access resources on Google Cloud. You can also deploy Active Directory to Google Cloud if you plan to use Active Directory to manage Windows servers on Google Cloud or if you rely on protocols that are not supported by Google Cloud.
https://cloud.google.com/architecture/patterns-for-using-active-directory-in-a-hybrid-environment
