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| Criterion |  Operations Causal Factor Analysis |  DevOps Blameless Postmortem |  Operations A3 Problem Solving |  DevOps Incident Timeline Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | 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 a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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 | High | Medium | Medium | Medium |
Timedifferent | 2-6 h | 30-90 min | 45-90 min | 60-180 min |
Participantsdifferent | 3-10 | 3-12 | 2-5 | 3-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Postmortem Doc, Action Items, Timeline | A3 Report, Action Plan, Root Cause Analysis | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions |
Tagsno overlap | CausalityIncidentRoot causeTimeline | Site Reliability EngineeringIncidentLearningReliability | LeanProblem solvingCoachingOperations | IncidentTimelineSite Reliability Engineering |