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| Criterion |  Operations Fault Tree Analysis |  Operations Barrier Analysis |  Facilitation Barcamp |  DevOps Blameless Postmortem |
|---|---|---|---|---|
Purposedifferent | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | 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. | When many people can contribute knowledge and the flow should stay open, Barcamp provides a framework for self-organized sessions. The format channels energy without defining the content too narrowly in advance. | 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 | High | Medium | Medium | Medium |
Timedifferent | 2-6 h | 2-4 h | Halber Tag bis 2 Tage | 30-90 min |
Participantsdifferent | 3-8 | 2-6 | 15-200 | 3-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Session Board, Session Notes, Community Learnings | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | RiskRoot causeSafety | Root causeSafetyIncident | FacilitationLarge groupLearning | Site Reliability EngineeringIncidentLearningReliability |