Active Directory Federation Services 2.0
Microsoft Active Directory Federation Services 2.0 is the May 2010 version of AD FS. It is a Security Token Service. This means that it offers a set of web services for authenticating users and programmatic clients against Active Directory, creating security tokens that can be used as sign-in tickets for web applications and web services.
It implements the WS-Trust, WS-Federation, and SAML-P standards.
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