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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations Barrier Analysis |  Operations Fishbone Diagram |
|---|---|---|---|
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. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | High | Medium | Low |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 2-4 h | 30-60 min |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 2-6 | 2-8 |
Formatdifferent | Workshop + async | 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 | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | Root causeSafetyIncident | Root causeQualityOperations |
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