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| Criterion |  Product Discovery Solution Interview |  Innovation Design Sprint |  Product Discovery Learning Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
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. | When the product question is unclear and time pressure is high, the method takes a team from an open idea to a testable solution. It connects problem understanding, decision, and learning in one compact format, lowering the risk of spending a lot of energy on a mere guess. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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 | High | Low | Medium |
Timedifferent | 30-60 min je Interview | 4-5 Tage | 25-40 min | 1-5 Tage |
Participantsdifferent | 5-10 Interviews | 5-8 | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Prototype, Test Findings, Decision Rationale | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision |
Tags1 shared | ValidationInterviewsPrototype | Design sprintPrototypeValidationInnovation | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery |