INVEST attributes of User Stories

INVEST is the acronym for six attributes of a good user story:

  • Independent: stories can be prioritized in any order
  • Negotiable: User stories can be discussed with the product owner and tradeoffs made based on functionality and cost.
  • Valuable: user stories must have a clear value
  • Estimable: user stories can be estimated for the amount of work they require
  • Small: small user stories (4 to 40 hours of work) are easier to create and test than large user stories;
  • Testable: the outcome of the story must be testable

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