Functional requirements.
also: functional requirementWhat the system does: the features users and admins rely on, such as uploading a photo or sending a message.
the two-minute refresher
- Functional = what the system DOES (create account, upload, search, send).
- They shape the feature set, the user interface and the business logic.
- Clarify them in the first minutes of an interview, before drawing anything.
- Pair every list of features with its non-functional targets: they decide how to build it.