For some people, like me, running the real IIS (not IIS Express) is preferably. When you host WCF in IIS under Windows 8 platform, like me, you can run into several problems. This is mine:
In Windows 8, I can’t use ServiceModel Registration Tool and it points me “Turn Windows feature on or off” which is under Control Panel setting.
Once in Windows Features window, make sure the highlighted item is check to be installed.