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| Criterion |  Product Strategy Lean Canvas |  Operations 8D Problem Solving |  UX Research Affinity Diagramming |  Operations A3 Problem Solving |
|---|---|---|---|---|
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. | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | 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. |
Complexitydifferent | Medium | High | Low | Medium |
Timedifferent | 45-90 min | 1-6 Wochen | 45–90 min | 45-90 min |
Participantsdifferent | 1-6 | 4-10 | 3-10 | 2-5 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Lean Canvas, Core Assumptions, Experiment Backlog | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Theme clusters, Insight statements, Opportunity areas | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | StartupLeanAssumptionsBusiness model | QualityProblem solvingRoot cause | SynthesisQualitativeRoot cause | LeanProblem solvingCoachingOperations |