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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations Failure Mode and Effects Analysis |  Agile Bucket System |
|---|---|---|---|
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 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. | When a large batch of work needs a fast, rough estimate, it sorts items into predefined size buckets. It sorts work by value, risk, and delivery ability. The result is captured as a Bucketed Backlog, Relative Estimates, and Split Candidates. |
Complexitydifferent | High | High | Medium |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 2-6 h | 30-90 min |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 3-10 | 3-12 |
Formatdifferent | Workshop + async | Workshop | 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 | FMEA Table, Risk Priority, Mitigation Actions | Bucketed Backlog, Relative Estimates, Split Candidates |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | RiskQualityOperationsRoot cause | EstimationBacklogRelative sizing |
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