Active Directory Federation Services
Applies To: Windows Server 2008
Active Directory Federation Services (AD FS) is a server role in Windows Server 2008 that provides Web single-sign-on (SSO) technologies to authenticate a user to multiple Web applications over the life of a single online session.
Planning and Architecture
Help installed with Windows Vista and Windows Server 2008 is also available in the Windows Server 2008 Technical Library.
TechCenters provide links to content outside of the Technical Library, including Knowledge Base articles, downloads, technical articles, and other resources.