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| Criterion |  Product Discovery Solution Interview |  Product Discovery Smoke Test |  Architecture Software Architecture Canvas |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | 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 only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. | The Software Architecture Canvas reduces a system to the most important architecture decisions, constraints, and interfaces. It is useful when teams need a resilient overall picture quickly. | 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 | 1-5 Tage | 1-2 h | 1-5 Tage |
Participantsdifferent | 5-10 Interviews | Nutzertraffic | 3-10 | Nutzertraffic |
Formatdifferent | Workshop + async | Async | Workshop | Async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Interest Metrics, Conversion Signal, Learning Note | Architecture Canvas, Goals, Constraints, Quality Attributes | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ValidationInterviewsPrototype | ValidationExperimentsDemandGrowth | CanvasArchitectureAlignmentWorkshop | ValidationExperimentsDemandDiscovery |