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| Criterion |  Product Strategy Product Canvas |  Architecture Architecture Decision Record |  Product Discovery Test Card |  Product Discovery Experiment Canvas |
|---|---|---|---|---|
Purposedifferent | When product goal and feature scope don't yet fit cleanly together, it creates a shared working picture. It connects need, core features, and assumptions into a solid starting point. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 1-2 h | 15-45 min | 20-35 min | 30-60 min |
Participantsdifferent | 2-8 | 1-3 | 1-5 | 1-5 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Product Canvas, Product Assumptions, Scope Notes | ADR File, Decision Log, Rationale | Test Card with a pre-set threshold | Completed Experiment Canvas, Success Metric |
Tagsno overlap | CanvasDiscoveryScope | ArchitectureRationaleDocumentationGovernance | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryHypothesis |