What is the term for a black-box test design technique that focuses on verifying user story implementations?

The term that specifically describes a black-box test design technique focused on verifying user story implementations is "user story testing." This approach aligns directly with agile methodologies, where user stories are central to defining the functional requirements from the end-user's perspective.

User story testing ensures that each feature implemented corresponds accurately to the acceptance criteria defined in the user story. This type of testing is essential for validating that the software not only meets functional requirements but also delivers real value to the user.

In contrast, while functional testing is broader and verifies that the system behaves according to requirements, it does not specifically target user stories. Similarly, regression testing focuses on ensuring that existing functionalities continue to work as intended after changes have been made, and integration testing examines how various components of the system work together, neither of which is particularly about user stories. Therefore, the specificity of user story testing in the context of agile presents it as the correct term.