Glossary · Requirements

User Story

A user story frames a requirement from the user's perspective — "As a [single role], I need to [action] so that [outcome]." It's paired with acceptance criteria that make 'done' testable, and is deliberately small enough to build and validate quickly. Stories describe intent and value, leaving the implementation to the team.

Related terms

Acceptance Criteria

The conditions a user story must meet to be considered complete and correct.

INVEST

A checklist for good user stories: Independent, Negotiable, Valuable, Estimable, Small, Testable.

Epic

A large body of work that groups related user stories under one goal.

Product Requirements Document (PRD)

The document that defines what a product should do and why, for the team building it.

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