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| Criterion |  Operations 8D Problem Solving |  UX Design Customer Journey Canvas |  UX Research Affinity Diagramming |
|---|---|---|---|
Purposedifferent | 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 a journey needs to be understood across several phases, it arranges experience, touchpoints, and opportunities into one picture. It makes gaps and friction along the user path clear. | 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. |
Complexitydifferent | High | Medium | Low |
Timedifferent | 1-6 Wochen | 1-3 h | 45–90 min |
Participantsdifferent | 4-10 | 3-10 | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Customer Journey Canvas, Pain Points, Experience Opportunities | Theme clusters, Insight statements, Opportunity areas |
Tagsno overlap | QualityProblem solvingRoot cause | JourneyCustomerService designCanvas | SynthesisQualitativeRoot cause |
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