The specific, testable conditions a story has to meet to be considered complete.
Example: 'User sees an error message if password is under 8 characters' — specific and checkable, unlike 'password validation works.'
depends on Definition of DoneAcceptance criteria define when an individual story is done; the Definition of Done adds team-wide standards on top of that.
parent of User StoryAcceptance criteria are the testable conditions attached to a story that define when it's actually done.