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| Criterion |  Architecture ARID (Active Reviews for Intermediate Designs) |  UX Design Lean UX Canvas |  Product Discovery Experiment Canvas |  Product Discovery Learning 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. | The Lean UX Canvas helps clarify user behavior, touchpoints, and concept decisions. It makes assumptions and desired outcomes visible and captures the result as a completed canvas, hypothesis list, and first experiment. | When experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | 2-3 h | 30-60 min | 25-40 min |
Participantsdifferent | Designers, developers as users, and facilitation | 3-8 | 1-5 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Completed Lean UX Canvas, Hypothesis list, First experiment | Completed Experiment Canvas, Success Metric | Learning Card with evidence and next action |
Tagsno overlap | ArchitectureEngineeringFeedbackValidationTasks | CanvasHypothesisOutcomesDiscovery | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryLearning |