Sometimes you'll need to setup a single point of authentification for e.g. to centralize stuff.
I've found a nice Document, about Integrating Linux systems with Active Directory using Open Source Tools from 2017.
Redhat, Autor: Torsten Scherf
And an additional Link from Redhat with an interesstig post from Dmitri Pal from 2014.
https://rhelblog.redhat.com/2015/02/04/overview-of-direct-integration-options/