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| Criterion |  Product Discovery Test Card |  Architecture Architecture Decision Record |  Product Discovery Fake Door Test |  Product Discovery MVP Test Matrix |
|---|---|---|---|---|
Purposedifferent | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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. | 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. | 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. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 20-35 min | 15-45 min | 1-5 Tage | 45-75 min |
Participantsdifferent | 1-5 | 1-3 | Nutzertraffic | 2-8 |
Formatdifferent | Workshop + async | Async | Async | Workshop |
Outputdifferent | Test Card with a pre-set threshold | ADR File, Decision Log, Rationale | Click Data, Interest Signal, Learning Decision | Test Matrix, Test Plan |
Tagsno overlap | ExperimentsValidationDiscoveryHypothesis | ArchitectureRationaleDocumentationGovernance | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryOptions |