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| Criterion |  Engineering Failure Scenario Analysis |  DevOps Blameless Postmortem |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|
Purposedifferent | In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage. | 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. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. |
Complexitydifferent | Medium | Medium | High |
Timedifferent | 1-3 h | 30-90 min | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | 3-8 | 3-12 | Evaluation team, architects, and relevant stakeholders |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Postmortem Doc, Action Items, Timeline | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations |
Tagsno overlap | FailureResilienceRisk | Site Reliability EngineeringIncidentLearningReliability | ArchitectureQualityRiskTradeoffsStakeholders |
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