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| Criterion |  Operations Change Analysis |  Engineering Fault Isolation |  Operations Barrier Analysis |  DevOps ChatOps |
|---|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | 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. | 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. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 45-120 min | 30-180 min | 2-4 h | Ongoing |
Participantsdifferent | 2-6 | 1-6 | 2-6 | 2-20 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Chat Transcript, Action Log, Automations |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | TroubleshootingDiagnosisEngineering | Root causeSafetyIncident | CollaborationEngineeringIncident |