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| Criterion |  Product Discovery Opportunity Interview |  Architecture C4 Model |  Product Discovery Learning Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
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. | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | 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 | Low | Low | Medium |
Timedifferent | 30-60 min je Interview | 1-4 h | 25-40 min | 1-5 Tage |
Participantsdifferent | 5-12 Interviews | 1-5 | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Interview Notes, Opportunity Themes, Customer Quotes | Context Diagram, Container Diagram, Component Diagram | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | DiscoveryInterviewsOpportunityCustomer | ArchitectureCommunicationVisualization | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery |