While the testing of Windows Azure Active Directory (WAAD) support for OpenID Connect has been going on for some months, Microsoft is now publicly participating in the OSIS interoperability testing.   While most people think of Connect as being adopted by Social sites like Google for Login, it is also gaining traction in enterprise targeted services like WAAD , Ping Federate and PingAccess.   In combination with provisioning protocols like SCIM I expect Connect to see a fair amount interest from Enterprises wanting a simple way to connect to the many Cloud based Software as a Service providers that they are now starting to use as well as protecting there own enterprise API.   John B. @ve7jtb