Endpoint interface

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In the Web service context the term endpoint received a formal definition with the W3C recommendation "WSDL 2.0" of 2007,^[1]

Defines the address or connection point to a Web service. It is typically represented by a simple HTTP URL string

The term "endpoint interface" is more specific about "how to implement the endpoint", for example by an OpenAPI specification or by WSDL specification. Typical endpoints can be expressed by URI Templates.

In Open API terms the endpoints are resources that the API exposes. The old (2004) term "end point" received also a glossary definition:^[2]

An association between a binding and a network address, specified by a URI, that may be used to communicate with an instance of a service. An end point indicates a specific location for accessing a service using a specific protocol and data format. [WSD Reqs]