web services - What are WSDL, SOAP and REST? - Stack Overflow
https://stackoverflow.com/questions/3764681/what-are-wsdl-soap-and-rest
WEBSep 21, 2010 · WSDL is an XML-based language for describing a web service. It describes the messages, operations, and network transport information used by the service. These web services usually use SOAP, but may use other protocols. A WSDL is readable by a program, and so may be used to generate all, or part of the client code necessary to call …
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