http://blogs.msdn.com/drnick/archive/2009/07/02/the-development-server-is-not-for-production.aspxAfter creating a WCF service application in Visual Studio you might have noticed that the project configuration has three choices of web servers for testing the application: Use Visual Studio Development Server Use Local IIS Web Server Use Custom WebenCommunityServer 2.1 SP1 (Build: 61025.2)