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| Criterion |  Operations Change Analysis |  Engineering Fault Isolation |  Operations Failure Mode and Effects Analysis |  Business Strategy Business Model Stress Test |
|---|---|---|---|---|
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 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. | A Business Model Stress Test checks how well a business model holds up under pressure and headwinds. It compares strengths, risks, market logic, and courses of action. The result is captured as a stress-test report and action plan per scenario. |
Complexitydifferent | Medium | Medium | High | High |
Timedifferent | 45-120 min | 30-180 min | 2-6 h | Half day |
Participantsdifferent | 2-6 | 1-6 | 3-10 | 3-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | FMEA Table, Risk Priority, Mitigation Actions | Stress Test Report, Action Plan per Scenario |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | TroubleshootingDiagnosisEngineering | RiskQualityOperationsRoot cause | StrategyBusiness modelRiskDiagnosis |