How is a SOAP service described? In which file?

A SOAP service is described using WSDL (Web Services Description Language) — an XML file that contains a description of the service interface, its methods, data types, protocols, and access points.

The WSDL file typically has a .wsdl extension and includes:

• Description of the service operations (methods)
• Data types (XSD schemas)
• Communication protocols (e.g., SOAP over HTTP)
• Endpoint addresses

Example filename: service.wsdl.

QA specialists need to know that the WSDL describes the service contract, which is used for testing and automation.