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| Criterion |  DevOps Blameless Postmortem |  Agile 4Ls Retrospective |  UX Design Customer Journey Canvas |  UX Research Customer Journey Mapping |
|---|---|---|---|---|
Purposedifferent | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | When a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. | When a journey needs to be understood across several phases, it arranges experience, touchpoints, and opportunities into one picture. It makes gaps and friction along the user path clear. | 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. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 30-90 min | 45–75 min | 1-3 h | 2-4 h |
Participantsdifferent | 3-12 | Team members involved | 3-10 | 4-10 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | 4Ls Board, Learning Themes, Improvement Actions | Customer Journey Canvas, Pain Points, Experience Opportunities | Journey Map, Pain-point List, Opportunity Backlog |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | RetrospectiveLearningReflectionTeam | JourneyCustomerService designCanvas | JourneyServiceService design |