What is an external active structure element that represents a point of access where one...

Comprehensive and Detailed in Depth Explanation:AnInterfacein ArchiMate representsan access point through which elements interact with services. It can be aBusiness Interface, Application Interface, or Technology Interface.

Interfaces serve as aboundarybetween internal and external systems, allowing controlled interactions. TheArchiMate 3.2 Specificationexplicitly states thatinterfaces expose services to the environment.

References:

Archi User Guide​

ArchiMate 3.2 Specification