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| Criterion |  Operations Change Analysis |  Engineering Fault Isolation |  Operations Causal Factor 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 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. | 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. |
Complexitydifferent | Medium | Medium | High | Medium |
Timedifferent | 45-120 min | 30-180 min | 2-6 h | Ongoing |
Participantsdifferent | 2-6 | 1-6 | 3-10 | 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 | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Chat Transcript, Action Log, Automations |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | TroubleshootingDiagnosisEngineering | CausalityIncidentRoot causeTimeline | CollaborationEngineeringIncident |