That's where WCF works - in internal systems where you have control over both clients and services. Trying to do a phased replacement of existing J2EE SOAP we

That's where WCF works - in internal systems where you have control over both clients and services. Trying to do a phased replacement of existing J2EE SOAP webservices without the ability to change the clients (meaning that you need wire-level compatible) and you'll see just how hard WCF is to extend. The fact that it IS possible to do that kind of integration is a testament to just how powerful the framework is. It's just a shame that Microsoft didn't spend an extra 5% effort on the documentation (or just open sourced it). I should add that we're currently using WCF as an integral part of our system as despite the drawbacks being able to support TCP (and MSMQ etc) and everything else in one framework is worth the extra complexity. Plus we have a lot of organizational knowledge of WCF now.