View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
Selected:Change AnalysisBarrier AnalysisATAM (Architecture Tradeoff Analysis Method)Fault Tree Analysis
| Criterion |  Operations Change Analysis |  Operations Barrier Analysis |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations Fault Tree Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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 critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. |
Complexitydifferent | Medium | Medium | High | High |
Timedifferent | 45-120 min | 2-4 h | Several meetings plus preparation and analysis; total effort depends on scope | 2-6 h |
Participantsdifferent | 2-6 | 2-6 | Evaluation team, architects, and relevant stakeholders | 3-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | Root causeSafetyIncident | ArchitectureQualityRiskTradeoffsStakeholders | RiskRoot causeSafety |