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| Criterion |  DevOps Blameless Postmortem |  Operations Barrier Analysis |  Decision Making Force Field Analysis |  Operations Causal Factor Analysis |
|---|---|---|---|---|
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 a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | In change initiatives, supporting and restraining forces sit at the table at the same time. Force Field Analysis makes these tensions explicit and shows where change can be pushed forward by strengthening or relieving. | 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. |
Complexitydifferent | Medium | Medium | Low | High |
Timedifferent | 30-90 min | 2-4 h | 45-90 min | 2-6 h |
Participantsdifferent | 3-12 | 2-6 | 3-12 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Force Field Map, Change Levers, Risk Notes | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Root causeSafetyIncident | ChangeDecisionStrategy | CausalityIncidentRoot causeTimeline |