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| Criterion |  Product Strategy Lean Canvas |  UX Research Card Sorting |  Product Discovery Smoke Test |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | When content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. | 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. | 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. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 45-90 min | 20-45 min | 1-5 Tage | 1-5 Tage |
Participantsdifferent | 1-6 | Based on research question | Nutzertraffic | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Async | Async |
Outputdifferent | Lean Canvas, Core Assumptions, Experiment Backlog | Content groups, Label set, IA hypotheses | Interest Metrics, Conversion Signal, Learning Note | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | StartupLeanAssumptionsBusiness model | Information architectureNavigationStructure | ValidationExperimentsDemandGrowth | ValidationExperimentsDemandDiscovery |