Service Model Extensionshttp://developers.de/blogs/damir_dobric/archive/2008/07/13/service-model-extensions.aspxBy extending of WCF there are several types of possible extensions in the configuration file. In general there are three main groups of extensions: 1. Behavior Extensions 2. Binding Element Extensions 3. Binding Extensions Here is an example which canenCommunityServer 2008 SP1 (Build: 30619.63)