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| Criterion |  Operations Change Analysis |  Product Discovery Solution Interview |  Product Discovery Fake Door Test |  Product Discovery MVP Test Matrix |
|---|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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 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 several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 45-120 min | 30-60 min je Interview | 1-5 Tage | 45-75 min |
Participantsdifferent | 2-6 | 5-10 Interviews | Nutzertraffic | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Solution Feedback, Objection List, Validation Notes | Click Data, Interest Signal, Learning Decision | Test Matrix, Test Plan |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | ValidationInterviewsPrototype | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryOptions |