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| Criterion |  Product Strategy Product Canvas |  Architecture C4 Model |  Product Discovery Test Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When product goal and feature scope don't yet fit cleanly together, it creates a shared working picture. It connects need, core features, and assumptions into a solid starting point. | 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 Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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 | 1-2 h | 1-4 h | 20-35 min | 1-5 Tage |
Participantsdifferent | 2-8 | 1-5 | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Product Canvas, Product Assumptions, Scope Notes | Context Diagram, Container Diagram, Component Diagram | Test Card with a pre-set threshold | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | CanvasDiscoveryScope | ArchitectureCommunicationVisualization | ExperimentsValidationDiscoveryHypothesis | ValidationExperimentsDemandDiscovery |