WSDL (Web Services Description Language) is an XML-based language that describes the interface and operations of a web service. It provides a standard way to describe the functionality of a web service, including the methods it supports, the parameters it accepts, and the data types it returns. Checking WSDL is essential for ensuring that a web service is functioning as expected and that it meets the requirements of the client application that is consuming it.
WSDL plays a crucial role in the interoperability of web services. It enables different applications and systems to communicate with each other seamlessly, regardless of their underlying technologies or programming languages. By providing a common language for describing web services, WSDL facilitates the development and deployment of complex distributed systems.