http://developers.de/blogs/damir_dobric/archive/2012/08/01/service-bus-server-is-not-an-esb-product.aspxService Bus 1.0 (also called Service Bus Server) is a Microsoft messaging product, which many people will compare with Enterprise Service Bus. Currently Microsoft is NOT positioning Service Bus Server as an ESB product. The reason for that is that ServiceenCommunityServer 2008 SP1 (Build: 30619.63)