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| Criterion |  Agile NoEstimates |  Product Discovery Fake Door Test |  Product Discovery Smoke Test |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | When estimating slows a team down more than it helps, it shifts the focus to flow, small slices, and real lead time. It sorts work by value, risk, and delivery ability. The result is captured as Throughput Data, Flow Forecast, and Slicing Rules. | 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 demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | laufend | 1-5 Tage | 1-5 Tage | 25-40 min |
Participantsdifferent | 2-12 | Nutzertraffic | Nutzertraffic | 1-5 |
Formatdifferent | Workshop + async | Async | Async | Workshop + async |
Outputdifferent | Throughput Data, Flow Forecast, Slicing Rules | Click Data, Interest Signal, Learning Decision | Interest Metrics, Conversion Signal, Learning Note | Learning Card with evidence and next action |
Tagsno overlap | EstimationForecastingFlow | ValidationExperimentsDemandDiscovery | ValidationExperimentsDemandGrowth | ExperimentsValidationDiscoveryLearning |