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| Criterion |  Operations Fault Tree Analysis |  Operations Failure Mode and Effects Analysis |  DevOps Game Day |  Operations Barrier Analysis |
|---|---|---|---|---|
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 process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | In preparing for rare incidents, the method tests response capability under controlled conditions. It shows where assumptions about stability, roles, and recovery are too optimistic. | 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. |
Complexitydifferent | High | High | High | Medium |
Timedifferent | 2-6 h | 2-6 h | Halber Tag | 2-4 h |
Participantsdifferent | 3-8 | 3-10 | 5-20 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | FMEA Table, Risk Priority, Mitigation Actions | Simulation Notes, Gaps List, Updated Runbooks | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | RiskRoot causeSafety | RiskQualityOperationsRoot cause | ResilienceOperationsIncident | Root causeSafetyIncident |