4 ways 1. Self hosting (using exe i.e. console/windows application) 2. Using Windows service 3. IIS (as a web application) 4. Windows Activation Service (WAS from IIS 7 onwards)
There are totally 4 ways to host WCF service namely,1) IIS 6.0 Hosting 2) Self Hosting 3) WCF Service 4) Windows Activation Service (WAS, IIS 7.0)