What is the advantage of using WCF over other distributed programming models like Web Services (ASMX), .NET Remoting, Enterprise Services stack etc?

What is the advantage of using WCF over other distributed programming models like Web Services (ASMX), .NET Remoting, Enterprise Services stack etc?

The advantage of using WCF over other distributed programming models like Web Services (ASMX), .NET Remoting, Enterprise Services stack etc, let's consider the following scenario. We have developed an application using web services. As we know web services use HTTP protocol and XML SOAP formatted messages, they are good for developing interoperable applications in a heterogeneous environment. We have a new client. Our new client is using .NET and he wants binary formatted messages over TCP protocol, because interoperability is not a concern and binary formatted messages over TCP protocol are much faster than XML SOAP formatted messages over HTTP. To satisfy the requirement of this client, now we cannot use our existing web service. So, we have to develop a brand new remoting application from the scratch. The business functionality is the same in web services and remoting application. Since our different clients have different requirements, we ended up creating the same business application using web services and remoting technologies. This approach has several disadvantages as listed below