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| Criterion |  Product Discovery Pretotyping |  Operations A3 Problem Solving |  Architecture ARID (Active Reviews for Intermediate Designs) |  Innovation Lean Startup |
|---|---|---|---|---|
Purposedifferent | Pretotyping clarifies whether a customer problem and solution idea create enough real demand. It separates problem, assumption, solution, and evidence, and captures the result as a pretotyping sketch, test setup, and conversion data. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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. | 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. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | Stunden bis wenige Tage | 45-90 min | 2–4 h review as a planning range; preparation and evaluation additional | Wochen bis Monate je Lernzyklus |
Participantsdifferent | 1-4 | 2-5 | Designers, developers as users, and facilitation | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Pretotyping sketch, Test setup, Conversion data, Go or no-go decision | A3 Report, Action Plan, Root Cause Analysis | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision |
Tagsno overlap | ValidationDemandMVP | LeanProblem solvingCoachingOperations | ArchitectureEngineeringFeedbackValidationTasks | LeanStartupValidationMVP |