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| Criterion |  UX Design Service Blueprinting |  Operations Fault Tree Analysis |  Operations Failure Mode and Effects Analysis |  Operations Barrier Analysis |
|---|---|---|---|---|
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. | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | 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. |
Complexitydifferent | High | High | High | Medium |
Timedifferent | 0.5-2 Tage | 2-6 h | 2-6 h | 2-4 h |
Participantsdifferent | 6-12 | 3-8 | 3-10 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Service Blueprint, Fail Points, Ownership Map | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | FMEA Table, Risk Priority, Mitigation Actions | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | Service designOperationsJourneyBlueprint | RiskRoot causeSafety | RiskQualityOperationsRoot cause | Root causeSafetyIncident |