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| Criterion |  Operations Barrier Analysis |  Operations Change Analysis |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|
Purposedifferent | 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. | 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 | Medium | Medium | High |
Timedifferent | 2-4 h | 45-120 min | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | 2-6 | 2-6 | Evaluation team, architects, and relevant stakeholders |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | 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 | Root causeSafetyIncident | ChangeRoot causeTroubleshootingComparison | ArchitectureQualityRiskTradeoffsStakeholders |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
