Microsoft announced that “starting April 9, 2010, Windows Azure platform AppFabric will be commercially available on a paid and fully SLA-supported basis. On March 9, Microsoft released a billing preview for the AppFabric technology, providing developers and customers with the same kind of "daily usage summary" they get for Windows Azure and SQL Azure. If you are already using AppFabric, we will begin charging as of April 9, 2010 at 12:00 AM GMT. You can find our pricing for AppFabric here,” noted Microsoft. Windows Server AppFabric is a bundle of Microsoft’s “Velocity” caching technology, plus its “Dublin” app server. Beta 2 of Windows Server App Fabric went to testers on March 1. Windows Azure AppFabric is the new name for .Net Services (which currently means service bus and access control only).