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Selected:ATAM (Architecture Tradeoff Analysis Method)Game DayBlameless PostmortemFailure Mode and Effects Analysis
| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  DevOps Game Day |  DevOps Blameless Postmortem |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | In preparing for rare incidents, the method tests response capability under controlled conditions. It shows where assumptions about stability, roles, and recovery are too optimistic. | 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. | 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. |
Complexitydifferent | High | High | Medium | High |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | Halber Tag | 30-90 min | 2-6 h |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 5-20 | 3-12 | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Simulation Notes, Gaps List, Updated Runbooks | Postmortem Doc, Action Items, Timeline | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | ResilienceOperationsIncident | Site Reliability EngineeringIncidentLearningReliability | RiskQualityOperationsRoot cause |