what is the equivalent of Windows Active Directory in Linux? - Lemmy.World

Hey all, sorry for the low level question, but basically I’m looking for the easiest way to set up something like a Windows AD. This would be for something like 10 computers at a local church where I do a lot of their infrastructure work. Is also be interested in sound something similar on my home network, but a while directory is probably overkill. And any suggestions on learnings or other suggestions appreciated!