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Selected:ARID (Active Reviews for Intermediate Designs)Starfish RetrospectiveLearning CardMVP Test Matrix
| Criterion |  Architecture ARID (Active Reviews for Intermediate Designs) |  Agile Starfish Retrospective |  Product Discovery Learning Card |  Product Discovery MVP Test Matrix |
|---|---|---|---|---|
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 Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | When several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | 45-90 min | 25-40 min | 45-75 min |
Participantsdifferent | Designers, developers as users, and facilitation | 4-12 | 1-5 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Starfish Board, Practice Changes, Experiments | Learning Card with evidence and next action | Test Matrix, Test Plan |
Tagsno overlap | ArchitectureEngineeringFeedbackValidationTasks | RetrospectiveImprovementExperimentsTeam | ExperimentsValidationDiscoveryLearning | ExperimentsValidationDiscoveryOptions |