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| Criterion |  DevOps Blameless Postmortem |  Operations Causal Factor Analysis |  DevOps ChatOps |
|---|---|---|---|
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. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | For operational work in a distributed team, the method links communication with direct system control. It records decisions right where the signal, the context, and the execution come together. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 30-90 min | 2-6 h | Ongoing |
Participantsdifferent | 3-12 | 3-10 | 2-20 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Chat Transcript, Action Log, Automations |
Tags1 shared | Site Reliability EngineeringIncidentLearningReliability | CausalityIncidentRoot causeTimeline | CollaborationEngineeringIncident |
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