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| Criterion |  Product Discovery MVP Test Matrix |  Product Discovery Experiment Canvas |  Engineering Goal Question Metric |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | Helps clarify technical problems, hypotheses, and next steps in concrete terms. It breaks a technical problem into testable parts. The result is captured as a GQM table and metric briefs. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 45-75 min | 30-60 min | 90-180 min | 20-35 min |
Participantsdifferent | 2-8 | 1-5 | 3-6 | 1-5 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Test Matrix, Test Plan | Completed Experiment Canvas, Success Metric | GQM Table, Metric Profiles | Test Card with a pre-set threshold |
Tagsno overlap | ExperimentsValidationDiscoveryOptions | ExperimentsValidationDiscoveryHypothesis | MetricsMeasurementEngineeringAlignment | ExperimentsValidationDiscoveryHypothesis |