Out of the box, Active Directory Federation Services (AD FS) 2.0 comes bundled with several endpoints to support different protocols (WS-Trust, WS-Federation, etc.), credential types, and security modes. These endpoints are used for communication to the STS so if you have an application that needs to receive tokens via WCF, you can connect to one of the provided endpoints depending on your security and transport requirements.

AD FS 2.0 Endpoints

I’ve started writing for my company’s blog: Under the Hood. I’ll still regularly post here to my blog, but definitely hop over there to check out the wide range of articles from my co-workers at Ironworks.
It could just be a coincidence, but I ran across this message board posting where somebody suggests that Microsoft name their product “Windows Identity Foundation”. However, this was three years ago! It’s nice that somebody followed up recently with a little “congratulations on your suggestion” posting, but I wonder if the original poster even realizes that his suggestion is now the official name for the identity framework that Microsoft just released.
I will go ahead and throw out that Microsoft should rename its ORM solution from Entity Framework to Windows Data Access Foundation (WDAF). You heard it here first!