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| Criterion |  Product Discovery Opportunity Solution Tree |  UX Research Empathy Mapping |  UX Design Lean UX Canvas |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | When discovery keeps swinging between goals, ideas, and learning loops, it creates clear steering logic. It connects the desired outcome, opportunities, and experiments into a legible structure. | When a lot is assumed about a target group but little is seen jointly, empathy mapping makes knowledge and gaps directly comparable. The picture also shows which assumptions hold up and where evidence is missing. | The Lean UX Canvas helps clarify user behavior, touchpoints, and concept decisions. It makes assumptions and desired outcomes visible and captures the result as a completed canvas, hypothesis list, and first experiment. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 1-2 h Setup, laufend | 30–60 min | 2-3 h | 20-35 min |
Participantsdifferent | 2-6 | 4-8 | 3-8 | 1-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Opportunity Solution Tree, Experiment Backlog, Learning Log | Empathy Map, Assumptions List, Research Gaps | Completed Lean UX Canvas, Hypothesis list, First experiment | Test Card with a pre-set threshold |
Tagsno overlap | DiscoveryOutcomesExperimentsOpportunity | SynthesisQualitativeWorkshop | CanvasHypothesisOutcomesDiscovery | ExperimentsValidationDiscoveryHypothesis |