Performance comparison between distributed technologies:

When we migrate distributed applications made with ASP.NET Web Services, WSE, .NET Enterprise Services and .NET Remoting to WCF, it will in almost all cases result in a performance boost:

Other Distributed Technologies	WCF Performance Advantage
ASP.NET Web Service	25%—50% faster
.NET Remoting	25% faster
WSE 2.0/3.0 implementations.	400% faster
.NET Enterprise Service	100% faster subject to the load.