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| Criterion |  UX Research Diary Study |  DevOps Blameless Postmortem |  DevOps Game Day |  DevOps Incident Timeline Analysis |
|---|---|---|---|---|
Purposedifferent | When experiences build up over days or weeks and a single session cannot capture them, Diary Study records the course of everyday life. Recurring triggers, moods, and habits become visible this way, beyond the sharpness of memory. | 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. | In preparing for rare incidents, the method tests response capability under controlled conditions. It shows where assumptions about stability, roles, and recovery are too optimistic. | For an incident with an unclear sequence, the method makes the timeline precisely visible. It separates perception, reaction, and delay so cause and effect become more clearly readable. |
Complexitydifferent | Medium | Medium | High | Medium |
Timedifferent | 1-4 Wochen | 30-90 min | Halber Tag | 60-180 min |
Participantsdifferent | 5-20 | 3-12 | 5-20 | 3-10 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Postmortem Doc, Action Items, Timeline | Simulation Notes, Gaps List, Updated Runbooks | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions |
Tagsno overlap | UX researchTrackingBehavior | Site Reliability EngineeringIncidentLearningReliability | ResilienceOperationsIncident | IncidentTimelineSite Reliability Engineering |