What's the difference between a user story and a use case?

User stories and use cases are both used to document the requirements from a user's perspective. There are some similarities. For example, they both capture features of the system. They're both used by the development team to construct the best solution. They can both be used to organize and categorize requirements. And they can both be used as references during testing to ensure that the requirements have been met.

But they also differ in substantial ways. Use cases and user stories accomplish very different goals. They uncover different levels of detail. And they are generally used at different points in a project and different points in the requirements lifecycle.…

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