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Selected:Failure Mode and Effects AnalysisIncident CommandATAM (Architecture Tradeoff Analysis Method)Root Cause Tree Analysis
| Criterion |  Operations Failure Mode and Effects Analysis |  DevOps Incident Command |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations Root Cause Tree Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | During an acute incident with several people involved, the method creates a clear leadership and communication structure. It reduces chaos when fast coordination and clean situational awareness are both needed at once. | 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. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. |
Complexitydifferent | High | Medium | High | Medium |
Timedifferent | 2-6 h | As needed | Several meetings plus preparation and analysis; total effort depends on scope | 1-3 h |
Participantsdifferent | 3-10 | 4-15 | Evaluation team, architects, and relevant stakeholders | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | FMEA Table, Risk Priority, Mitigation Actions | Incident Log, Action Tracker, Stakeholder Updates | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | RiskQualityOperationsRoot cause | IncidentOperationsReliability | ArchitectureQualityRiskTradeoffsStakeholders | Root causeTreeIncidentQuality |