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| Criterion |  Product Discovery Opportunity Interview |  Product Discovery Problem Interview |  Agile 4Ls Retrospective |  Product Discovery Learning Card |
|---|---|---|---|---|
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 a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. | 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 | 30-60 min je Interview | 45–75 min | 25-40 min |
Participantsdifferent | 5-12 Interviews | 5-12 Interviews | Team members involved | 1-5 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Interview Notes, Opportunity Themes, Customer Quotes | Problem Evidence, Risk Notes, Customer Segments | 4Ls Board, Learning Themes, Improvement Actions | Learning Card with evidence and next action |
Tagsno overlap | DiscoveryInterviewsOpportunityCustomer | DiscoveryInterviewsValidation | RetrospectiveLearningReflectionTeam | ExperimentsValidationDiscoveryLearning |