WCF interview questions: - What is the difference between WCF and Web services?

• WCF services can be hosted in multiple protocols like http, TCP etc. Web
services can only be hosted on Http protocol.

• WCF has COM+ so you can call two different WCF services in a transaction, we
can not call two different web services in one transaction.

• WCF integrates with MSMQ, for web services we will need to write code.

In simple words below equation shows the difference with simple equation.

WCF = Web services + Remoting + MSMQ + COM+
Web service = WCF – (Remoting + MSMQ + COM+ )

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