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| Criterion |  UX Design Service Blueprinting |  Decision Making PERT Estimation |  Decision Making Three-Point Estimation |  Operations Failure Mode and Effects 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. | On complex initiatives, a plain average tends to understate just how uncertain the outcome really is. It separates options, evaluation criteria, and open risks. The result is captured as a PERT Estimate, Expected Value, and Risk Notes. | A single estimate for effort, time, or risk often looks too smooth for the real uncertainty behind it. It separates options, evaluation criteria, and open risks. The result is captured as a Three-Point Estimate, Risk Range, and Assumption Notes. | 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. |
Complexitydifferent | High | Medium | Medium | High |
Timedifferent | 0.5-2 Tage | 15-45 min | 10-30 min je Item | 2-6 h |
Participantsdifferent | 6-12 | 1-8 | 1-8 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Service Blueprint, Fail Points, Ownership Map | PERT Estimate, Expected Value, Risk Notes | Three-Point Estimate, Risk Range, Assumption Notes | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | Service designOperationsJourneyBlueprint | EstimationUncertaintyRisk | EstimationUncertaintyForecasting | RiskQualityOperationsRoot cause |