Windows Communication Framework (WCF)
Windows Communication Foundation (WCF) is a feature of Windows Server® 2008.
It can be activated by using the Server Manager's "Add Features Wizard". The Server Manager is a Microsoft Management Console plug-in found in the Control Panel. Use WCF as part of the Application Server Role for deployment of a Web Services application.
The following dialog shows the "Add Feature Wizard" dialog in Server Manager used to activate WCF. See the highlighted item.