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Web Services Versioning - Part 2

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Joined: 2003-06-09

Several months ago, I blogged about versioning of web services. Between then and now, I realized that versioning of web services is a very nebulous topic, and that the problem of versioning could test the motivation of even the most committed web services architect. In this post, I would like to take the next step and discuss some possible ways of versioning web services. In this process, I would like to answer two questions:
a) How to version the public view of a web serice, i.e. the WSDL?
b) How to make web service implementations support versioning?