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| Criterion |  Business Strategy Value Chain Analysis |  DevOps Blameless Postmortem |  Operations Learning Review |  Business Strategy Business Model Stress Test |
|---|---|---|---|---|
Purposedifferent | Value Chain Analysis shows where value is created, costs accrue, and differentiation becomes possible along the process. It compares strengths, risks, market logic, and courses of action. The result is captured as a value-chain map and lever list. | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. | 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 | High | Medium | Medium | High |
Timedifferent | Half day | 30-90 min | 1-3 h | Half day |
Participantsdifferent | 3-8 | 3-12 | 3-10 | 3-8 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Value Chain Map, Lever List | Postmortem Doc, Action Items, Timeline | Learning Review Notes, System Factors, Improvement Actions | Stress Test Report, Action Plan per Scenario |
Tagsno overlap | StrategyBusiness modelDiagnosisAnalysis | Site Reliability EngineeringIncidentLearningReliability | LearningRetrospectiveIncidentOperations | StrategyBusiness modelRiskDiagnosis |