The new Azure Access Control Service - and a demo of how all the pieces fit together

From now on, all Live IDs will also work as OpenIDs...

Solving problems with Claims

Claims will give you vast "reach" both with consumers and with enterprises. They'll also guarantee choice, making you immune to lock-in.

As just announced on the “Geneva” Team Blog (formerly known as the CardSpace Team Blog), beta releases of all three components of Microsoft’s “Geneva” identity platform are now available at the “Geneva” Connect site. The components are: “Geneva” Framework: Previously called “Zermatt“, the Geneva Framework helps developers build claims-aware .NET applications that externalize user [...]

Microsoft has released a beta of its most important developer tool to date