Need a little Cache?
One of the new additions to Windows Server AppFabric is the new Caching Service. application developers can utilize this service to greatly improve the performance of their Azure based services by having data reside closer to where it is to be accessed.
Another excellent use for this service is to get around the statelessness nature of Windows Azure Web roles. By using the new Caching Service based Windows Azure State Provider, ASP.NET application state can be stored and retrieved in a persistent fashion across role instances.
See his blog post for more information and the video of his talk.