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| Criterion |  UX Design Service Blueprinting |  Operations Fishbone Diagram |  UX Research Affinity Diagramming |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | When a service experience is spread across several touchpoints, it brings frontstage and backstage together. It shows where user contact and internal responsibility must fit. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | 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 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 | High | Low | Low | High |
Timedifferent | 0.5-2 Tage | 30-60 min | 45–90 min | 1-6 Wochen |
Participantsdifferent | 6-12 | 2-8 | 3-10 | 4-10 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Service Blueprint, Fail Points, Ownership Map | Fishbone Diagram, Cause Categories, Investigation Backlog | Theme clusters, Insight statements, Opportunity areas | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | Service designOperationsJourneyBlueprint | Root causeQualityOperations | SynthesisQualitativeRoot cause | QualityProblem solvingRoot cause |