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| Criterion |  DevOps Incident Command |  Operations Causal Factor Analysis |  Facilitation 3-Circle Venn Diagram |  DevOps Blameless Postmortem |
|---|---|---|---|---|
Purposedifferent | During an acute incident with several people involved, the method creates a clear leadership and communication structure. It reduces chaos when fast coordination and clean situational awareness are both needed at once. | 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. | When three perspectives matter at the same time, a Three-Circle Venn Diagram shows the overlaps and remainders precisely. It makes visible where shared effect arises and where only a partial perspective applies. | 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. |
Complexitydifferent | Medium | High | Low | Medium |
Timedifferent | As needed | 2-6 h | 15-45 min | 30-90 min |
Participantsdifferent | 4-15 | 3-10 | 2-8 | 3-12 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Incident Log, Action Tracker, Stakeholder Updates | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Venn Diagram, Overlap Notes, Differentiators | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | IncidentOperationsReliability | CausalityIncidentRoot causeTimeline | ComparisonFacilitationAlignment | Site Reliability EngineeringIncidentLearningReliability |