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| Criterion |  Product Strategy Lean Canvas |  Operations 8D Problem Solving |  Innovation Lean Startup |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | High | Medium | Low |
Timedifferent | 45-90 min | 1-6 Wochen | Wochen bis Monate je Lernzyklus | 15-30 min |
Participantsdifferent | 1-6 | 4-10 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Lean Canvas, Core Assumptions, Experiment Backlog | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Root cause notes, Countermeasures |
Tagsno overlap | StartupLeanAssumptionsBusiness model | QualityProblem solvingRoot cause | LeanStartupValidationMVP | Root causeIncidentLeanProblem solving |