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Selected:Architecture Decision RecordFailure Mode and Effects AnalysisChange AnalysisATAM (Architecture Tradeoff Analysis Method)
| Criterion |  Architecture Architecture Decision Record |  Operations Failure Mode and Effects Analysis |  Operations Change Analysis |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|---|
Purposedifferent | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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. | 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. | 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 | Low | High | Medium | High |
Timedifferent | 15-45 min | 2-6 h | 45-120 min | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | 1-3 | 3-10 | 2-6 | Evaluation team, architects, and relevant stakeholders |
Formatdifferent | Async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | FMEA Table, Risk Priority, Mitigation Actions | Change Matrix, Cause Hypotheses, Validation Questions, Action List | 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 | ArchitectureRationaleDocumentationGovernance | RiskQualityOperationsRoot cause | ChangeRoot causeTroubleshootingComparison | ArchitectureQualityRiskTradeoffsStakeholders |