What Are Acceptance Criteria?

Acceptance criteria are the specific conditions a feature or user story must satisfy for it to be considered complete and ready for release. They define what “done” means in clear, testable terms so that everyone on the team shares the same expectations.

Why acceptance criteria matter

Without acceptance criteria, “done” is subjective. The engineer thinks the feature is complete when it works. The designer thinks it is complete when it matches the mockup. The PM thinks it is complete when it handles all edge cases. Acceptance criteria align these perspectives before work begins, reducing surprise and rework at the end.

They also make QA more effective. When testers have a clear list of conditions to verify, testing is faster and more thorough. And when a story passes all its acceptance criteria, the team can confidently mark it as done.

Writing good acceptance criteria

Each criterion should be specific, testable, and independent. “The page loads fast” is vague. “The page loads in under two seconds on a 4G connection” is testable. Good criteria cover the happy path (what happens when everything goes right), edge cases (what happens with unexpected input), and error states (what happens when something goes wrong).

Avoid writing criteria that describe implementation details. Focus on observable behavior. “The system uses a caching layer” is an implementation detail. “Previously loaded data appears instantly on return visits” is a behavior the user can verify.

Related terms

• User Story

  The unit of work that acceptance criteria are attached to

• Product Spec

  The detailed document where acceptance criteria are often documented alongside behavior descriptions

• Sprint Planning

  The meeting where acceptance criteria are reviewed to ensure stories are ready for development