Best practice for versioning

[Mary Cole]

Hi,

What is the best industry practice to add and release fresh set of new APIs for an exsiting web service? Should we have a new WSDL with a different name space or a new URL for every version? We also need to support exisitng APIs for existing customers

[Ivan Krizsan]

Hi!
Take a look at the following article: http://soa.dzone.com/articles/soa-and-xml-factor-designing
There is also a book on the subject by Thomas Erl: Web Service Contract Design and Versioning for SOA.
Best wishes!