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| Criterion |  Product Strategy Counter Metrics |  Product Discovery Fake Door Test |  Product Discovery Test Card |
|---|---|---|---|
Purposedifferent | When a headline metric could mask side effects, it adds guardrail signals against unwanted outcomes. It connects customer value, product logic, and decision priorities. The result is captured as a counter-metric list and guardrail definitions. | 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. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 30-60 min | 1-5 Tage | 20-35 min |
Participantsdifferent | 2-6 | Nutzertraffic | 1-5 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | Counter Metric List, Guardrail Definitions | Click Data, Interest Signal, Learning Decision | Test Card with a pre-set threshold |
Tags1 shared | MetricsMeasurementStrategyExperiments | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryHypothesis |
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