WCF (Windows Communication Foundation) Question:
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We have already 2 hostings IIS and self hosting. There is another hosting ie WAS Hosting. What is the use of the WAS(Windows activation Service) compared to other hosting?

Answer:

Windows Process Activation Server (WAS) supports the
communication protocols such as HTTP, TCP, Named Pipes and
MSMQ while IIS supports only HTTP. WAS is available with
Windows Server 2008 only. If the server is Server 2008 then
the better option to deploy WCF service is through WAS. If
the deployment server is Server 2003, the only possible way
to deploy the application with protocols other than HTTP is
using self hosting (using a Windows Application or a Windows
Service and if for a demo purpose can use Console
application also). So WAS is a gift with Vista and Server
2008.

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