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| Criterion |  Product Discovery Solution Interview |  Innovation Lean Startup |  Product Discovery Test Card |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | When a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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 | 30-60 min je Interview | Wochen bis Monate je Lernzyklus | 20-35 min | 25-40 min |
Participantsdifferent | 5-10 Interviews | 2-8 | 1-5 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Test Card with a pre-set threshold | Learning Card with evidence and next action |
Tags1 shared | ValidationInterviewsPrototype | LeanStartupValidationMVP | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryLearning |