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| Criterion |  Product Strategy Lean Canvas |  Product Discovery Test Card |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 45-90 min | 20-35 min | 15-30 min |
Participantsdifferent | 1-6 | 1-5 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Lean Canvas, Core Assumptions, Experiment Backlog | Test Card with a pre-set threshold | Root cause notes, Countermeasures |
Tagsno overlap | StartupLeanAssumptionsBusiness model | ExperimentsValidationDiscoveryHypothesis | Root causeIncidentLeanProblem solving |
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