Paul Madsen provides a technical overview of the Liberty Alliance phase 1 architecture and a glimpse at phase 2.
Phase 2 also includes the introduction of Liberty Alliance Identity Services Interface Specifications (ID-SIS), a collection of specifications built on the ID-WSF. These specifications will provide a standard way for companies to build interoperable services like registration profiles, contact books, calendar, geo-location, or alert services. The first service interface specification to be introduced is the ID-Personal Profile, which will define a basic profile template that can be used to build a registration service.