• An XML-based interface description language that is used for describing the functionality offered by a web service. The acronym “WSDL” is also used for any specific WSDL description of a web service (also referred to as a WSDL file), whose purpose is roughly like a type signature in a programming language. WSDL became a W3C Recommendation in 2007. ← Wikipedia ↑ w3.org/TR/wsdl20

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