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| Criterion |  Engineering Goal Question Metric |  Product Discovery Fake Door Test |  Product Discovery Test Card |  Product Discovery Hypothesis Prioritization Canvas |
|---|---|---|---|---|
Purposedifferent | 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. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | When many hypotheses compete for attention, it brings order to their learning sequence and importance. It separates problem, assumption, solution, and evidence. The result is captured as a prioritization canvas and a hypothesis backlog. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 90-180 min | 1-5 Tage | 20-35 min | 60-90 min |
Participantsdifferent | 3-6 | Nutzertraffic | 1-5 | 3-8 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop |
Outputdifferent | GQM Table, Metric Profiles | Click Data, Interest Signal, Learning Decision | Test Card with a pre-set threshold | Prioritization Canvas, Hypothesis Backlog |
Tagsno overlap | MetricsMeasurementEngineeringAlignment | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryHypothesis | ExperimentsPrioritizationDiscoveryHypothesis |