Stories are the Fundamental unit of work in an agile project, which “describes some item of value to a user or product owner”. Stories are units of value that and are visible and understandable outside the team. Stories can describe functional scenarios, interactions, UI screen, and non functional requirements.
We use stories to drive the team’s work effort. In scrum, stories are prioritized by the Product Owner. The stories are then broken down into tasks by the team. Stories are also know as backlog items in scrum.