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| Criterion |  Operations Barrier Analysis |  UX Research Customer Journey Mapping |  Operations Root Cause Analysis |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | 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. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | 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 | Medium | Medium | Low |
Timedifferent | 2-4 h | 2-4 h | 1-4 h | 15-30 min |
Participantsdifferent | 2-6 | 4-10 | 3-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Journey Map, Pain-point List, Opportunity Backlog | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Root cause notes, Countermeasures |
Tagsno overlap | Root causeSafetyIncident | JourneyServiceService design | Root causeProblem solvingQualityIncident | Root causeIncidentLeanProblem solving |