For people who create software today, working with identity isn’t much fun. There are too many technologies and too much complexity. The industry-wide shift toward claims-based identity improves this, offering a better, simpler approach. To help Windows developers embrace this new world, Microsoft has created a set of related offerings: Active Directory Federation Services (AD FS) 2.0, CardSpace 2.0, and Windows Identity Foundation (WIF). This session provides an overview of these technologies, showing the problems each one addresses and how they relate to one another. The goal is to provide a big-picture understanding of Microsoft’s approach to claims-based identity.