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| Criterion |  DevOps ChatOps |  Operations Barrier Analysis |  Product Discovery Assumption Mapping |  Operations Fault Tree Analysis |
|---|---|---|---|---|
Purposedifferent | For operational work in a distributed team, the method links communication with direct system control. It records decisions right where the signal, the context, and the execution come together. | 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 assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | 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. |
Complexitydifferent | Medium | Medium | Medium | High |
Timedifferent | Ongoing | 2-4 h | 45-60 min | 2-6 h |
Participantsdifferent | 2-20 | 2-6 | 2-8 | 3-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Chat Transcript, Action Log, Automations | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Assumption map, Test backlog, Risk ranking | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tagsno overlap | CollaborationEngineeringIncident | Root causeSafetyIncident | AssumptionsRiskExperimentsValidation | RiskRoot causeSafety |