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| Criterion |  Engineering Fault Isolation |  Innovation Lean Startup |  Architecture ARID (Active Reviews for Intermediate Designs) |  Product Strategy Lean Canvas |
|---|---|---|---|---|
Purposedifferent | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | 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. | 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 an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 30-180 min | Wochen bis Monate je Lernzyklus | 2–4 h review as a planning range; preparation and evaluation additional | 45-90 min |
Participantsdifferent | 1-6 | 2-8 | Designers, developers as users, and facilitation | 1-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Lean Canvas, Core Assumptions, Experiment Backlog |
Tagsno overlap | TroubleshootingDiagnosisEngineering | LeanStartupValidationMVP | ArchitectureEngineeringFeedbackValidationTasks | StartupLeanAssumptionsBusiness model |