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| Criterion |  Product Discovery Opportunity Interview |  Product Discovery Problem Interview |  Agile Starfish Retrospective |  Product Discovery MVP Test Matrix |
|---|---|---|---|---|
Purposedifferent | When opportunities are still hidden behind signals of need, it structures conversations around needs and obstacles. It looks for patterns that lead to new product opportunities. | When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | When improvement options need to be sorted more finely than just start and stop, it brings observations into clear kinds of action. This makes visible what should be done more, less, newly, or continued. | 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. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 30-60 min je Interview | 30-60 min je Interview | 45-90 min | 45-75 min |
Participantsdifferent | 5-12 Interviews | 5-12 Interviews | 4-12 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Interview Notes, Opportunity Themes, Customer Quotes | Problem Evidence, Risk Notes, Customer Segments | Starfish Board, Practice Changes, Experiments | Test Matrix, Test Plan |
Tagsno overlap | DiscoveryInterviewsOpportunityCustomer | DiscoveryInterviewsValidation | RetrospectiveImprovementExperimentsTeam | ExperimentsValidationDiscoveryOptions |