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| Criterion |  Architecture ARID (Active Reviews for Intermediate Designs) |  Product Discovery Problem Interview |  Innovation Lean Startup |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | 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. | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | 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. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | 30-60 min je Interview | Wochen bis Monate je Lernzyklus | 1-5 Tage |
Participantsdifferent | Designers, developers as users, and facilitation | 5-12 Interviews | 2-8 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Problem Evidence, Risk Notes, Customer Segments | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Click Data, Interest Signal, Learning Decision |
Tags1 shared | ArchitectureEngineeringFeedbackValidationTasks | DiscoveryInterviewsValidation | LeanStartupValidationMVP | ValidationExperimentsDemandDiscovery |