AD FS – what, why and how?

Excellent article by Sean Ivey from Microsoft on what’s good (and what’s no so much) about AD FS:

https://blogs.technet.microsoft.com/askidentity/2013/05/13/an-introduction-to-ad-fs-we-can-all-understand/

Further read on the subject:

https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/ee913566(v=ws.10)