We are happy to share that starting April 9, 2010, Windows Azure platform AppFabric will be commercially available on a paid and fully SLA-supported basis. In order to help you get familiarized with AppFabric billing, we released the AppFabric Billing Preview yesterday March 9. With this billing preview, you will be able to download a usage summary from the AppFabric Developer Portal , with information similar to that of the “daily usage summary” currently available to you 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.