Both WSDLs and SOAP messages are coded in XML.

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Quizplus · Accepted Answer

Both WSDLs (Web Services Description Language) and SOAP (Simple Object Access Protocol) messages are indeed coded in XML (eXtensible Markup Language), which is a widely used format for sharing structured data over the internet. WSDL is an XML-based language that is used to describe the functionality offered by a web service, including the input and output messages, the data types involved, and the operations that can be performed. SOAP messages, on the other hand, are XML documents that are exchanged between web service providers and consumers to perform remote procedure calls (RPCs) and other interactions.

Both WSDLs and SOAP Messages Are Coded in XML