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| Criterion |  Product Discovery Fake Door Test |  Engineering Goal Question Metric |  Product Discovery MVP Test Matrix |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | 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. | 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 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 1-5 Tage | 90-180 min | 45-75 min | 25-40 min |
Participantsdifferent | Nutzertraffic | 3-6 | 2-8 | 1-5 |
Formatdifferent | Async | Workshop | Workshop | Workshop + async |
Outputdifferent | Click Data, Interest Signal, Learning Decision | GQM Table, Metric Profiles | Test Matrix, Test Plan | Learning Card with evidence and next action |
Tagsno overlap | ValidationExperimentsDemandDiscovery | MetricsMeasurementEngineeringAlignment | ExperimentsValidationDiscoveryOptions | ExperimentsValidationDiscoveryLearning |