We’re happy to say that this feature have been released to production. It's available in Crowd Data Center 3.6 and above.
Thanks again for your patience and support!
Senior Product Manager, Crowd
Since 3.0, Crowd was supported with AzureAD.
However, we do not have any function to filter users and groups. All users and groups will be synchronized to crowd.
It will be nice if we could filter up all the unwanted user like ldap