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Selected:ALPEN MethodFault Tree AnalysisATAM (Architecture Tradeoff Analysis Method)Fishbone Diagram
| Criterion |  Operations ALPEN Method |  Operations Fault Tree Analysis |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations Fishbone Diagram |
|---|---|---|---|---|
Purposedifferent | With an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time. | 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. | 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. | 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 | Low | High | High | Low |
Timedifferent | 10-20 min daily | 2-6 h | Several meetings plus preparation and analysis; total effort depends on scope | 30-60 min |
Participantsdifferent | 1 | 3-8 | Evaluation team, architects, and relevant stakeholders | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Daily Plan, Time Estimates, Review Notes | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | PlanningTime managementProductivityOperations | RiskRoot causeSafety | ArchitectureQualityRiskTradeoffsStakeholders | Root causeQualityOperations |