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| Criterion |  Operations Runbook |  DevOps Blameless Postmortem |  Systems Thinking Future Reality Tree |
|---|---|---|---|
Purposedifferent | For recurring operational tasks or incidents, the method keeps solid action logic ready. It reduces uncertainty when time pressure, role changes, or rare situations demand fast access. | 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. | A Future Reality Tree shows how desired actions are meant to lead to a better system state. The method checks whether a path of change holds together logically before time flows into implementation. |
Complexitydifferent | Low | Medium | High |
Timedifferent | 20-60 min | 30-90 min | 2-4 h |
Participantsdifferent | 1-4 | 3-12 | 3-8 |
Formatdifferent | Async | Workshop + async | Workshop |
Outputdifferent | Runbook, Checklist, Escalation Path | Postmortem Doc, Action Items, Timeline | Future Reality Tree, Negative Branches, Assumption List, Improved Injections |
Tagsno overlap | OperationsReliabilityDocumentation | Site Reliability EngineeringIncidentLearningReliability | Theory of ConstraintsSystems thinkingChange |
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