If you have worked with SOAP services in your career, surely you have had to deal with the concept of a Web Services Description Language (WSDL) manifest. WSDL is the identity card of a SOAP service and fully describes the service itself in terms of the endpoints, ports, and payloads used by the service. Using WSDL, you can understand how a third-party service works and you can create its client automatically.
The OpenAPI Specification is the counterpart of WSDL for REST API services: they are a set of specifications created by the most important players in the computer science world, such as Google, Microsoft, and IBM which join together in open governance structure under the Linux Foundation ...