Enterprise managed users (EMU), which allows for centralized user account administration, is generally available for customers using GitHub Enterprise Cloud (GHEC).
For more details on EMU, check out our blog post.
GitHub Enterprise Cloud self-service organization transfers
GitHub Enterprise Cloud enterprise owners may now invite GitHub organizations to join their enterprise account or remove existing enterprise-owned organizations. New invitations will require organization owner approval and a final confirmation from an enterprise owner.
Learn more about self-service organization transfers.