Active Directory is a monster. Got downvoted to hell the other day for saying there is nothing out there that comes close for managing a fleet of machines. Most of the idiot arguments revolved around thinking AD is fancy LDAP.
"Linux and Mac can do authentication!"
If one's view of AD is that limited, we're not having the same conversation. Cross connect AD with Powershell and Hyper-V, you have a robust ecosystem for enterprise. And there are zero issues with running headless Linux servers on Hyper-V.