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Project Management & Agile · Foundational

INVEST

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

Definition

Coined by Bill Wake, INVEST helps teams judge whether a backlog item is well formed and ready for a Sprint.

Example

A story too large to estimate fails the 'E' and 'S' criteria and should be split.

Exam tip

If a story is not testable, it lacks clear acceptance criteria.

Related terms