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| Criterion |  UX Research Customer Journey Mapping |  Architecture Architecture Decision Record |  Operations 5 Whys |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | When a user journey falls apart across many touchpoints, customer journey mapping makes the experience visible as a coherent arc. Phases, emotions, and breaks become legible enough to prioritize critical moments deliberately. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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. | 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. |
Complexitydifferent | Medium | Low | Low | High |
Timedifferent | 2-4 h | 15-45 min | 15-30 min | 1-6 Wochen |
Participantsdifferent | 4-10 | 1-3 | 2-6 | 4-10 |
Formatdifferent | Workshop | Async | Workshop | Workshop + async |
Outputdifferent | Journey Map, Pain-point List, Opportunity Backlog | ADR File, Decision Log, Rationale | Root cause notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | JourneyServiceService design | ArchitectureRationaleDocumentationGovernance | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause |