http://developers.de/blogs/damir_dobric/archive/2011/05/22/access-control-service-endpoints.aspxWindows Azure AppFabric Access Control Service v2 provides a number of endpoints which wrap up many authentication, authorization and federation scenarios into a single platform. Stepping through all samples and reading of all specifications is prettyenCommunityServer 2008 SP1 (Build: 30619.63)