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| Criterion |  Architecture ARID (Active Reviews for Intermediate Designs) |  Agile Starfish Retrospective |  Product Discovery Test Card |
|---|---|---|---|
Purposedifferent | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | When improvement options need to be sorted more finely than just start and stop, it brings observations into clear kinds of action. This makes visible what should be done more, less, newly, or continued. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | 45-90 min | 20-35 min |
Participantsdifferent | Designers, developers as users, and facilitation | 4-12 | 1-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Starfish Board, Practice Changes, Experiments | Test Card with a pre-set threshold |
Tagsno overlap | ArchitectureEngineeringFeedbackValidationTasks | RetrospectiveImprovementExperimentsTeam | ExperimentsValidationDiscoveryHypothesis |
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