Multiple choice technology web technology WSDL is W3C standard not a W3C standard Microsoft's standard IBM standard Reveal answer Fill a bubble to check yourself B Correct answer Explanation WSDL 1.1 was submitted to W3C by Ariba, IBM, and Microsoft in 2001 but was never officially adopted as a W3C standard. WSDL 2.0 became a W3C Recommendation in 2007. Therefore, WSDL (especially the original version) is 'not a W3C standard'.