A primary goal of Web services is to provide a standard for interoperability across various technologies. The WS-* protocols were introduced to build on the foundation of SOAP to address enterprise requirements for services such as security, transactions, reliability, etc. It’s been several years since WS-* kicked off. Where do things stand and can I depend on WS-* to achieve interop in my enterprise? What are the various specs under the WS-* umbrella, and when do I need them? How complete are the specs? How mature is the WCF implementation of the WS-* specs? How mature are the other major enterprise vendor’s WS-* stacks and can I have a realistic expectation of achieving interop for the scenarios I need? If I am stuck on interop issues where can I go for help and guidance? What are the best debugging tools to use?