Final answer:
A user story is a listed acceptance criteria written from the perspective of an end-user, used in Agile software development to define desired features and functionality.
Step-by-step explanation:
A listed acceptance criteria to fulfil certain requirements of a user and normally written from the perspective of an end-user is a user story. User stories are used in the Agile software development methodology to define the features and functionality desired by the end-users. They are written in a simple, non-technical language to ensure clear communication between the development team and the stakeholders.