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| Criterion |  UX Design Service Blueprinting |  Decision Making PERT Estimation |  UX Research Customer Journey Mapping |  Decision Making Three-Point Estimation |
|---|---|---|---|---|
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. | 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. | 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. |
Complexitydifferent | High | Medium | Medium | Medium |
Timedifferent | 0.5-2 Tage | 15-45 min | 2-4 h | 10-30 min je Item |
Participantsdifferent | 6-12 | 1-8 | 4-10 | 1-8 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Service Blueprint, Fail Points, Ownership Map | PERT Estimate, Expected Value, Risk Notes | Journey Map, Pain-point List, Opportunity Backlog | Three-Point Estimate, Risk Range, Assumption Notes |
Tagsno overlap | Service designOperationsJourneyBlueprint | EstimationUncertaintyRisk | JourneyServiceService design | EstimationUncertaintyForecasting |