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| Criterion |  Decision Making Pre-Mortem |  Decision Making Risk Matrix |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|
Purposedifferent | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | When a project faces many possible disruptions, it quickly becomes unclear which risks deserve attention first. It separates options, evaluation criteria, and open risks. The result is captured as a Risk Matrix and a Top Risk List. | 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 | Low | Low | High |
Timedifferent | 20–45 min | 30-60 min | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | Small cross-functional group | 3-10 | Evaluation team, architects, and relevant stakeholders |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Risk list, Mitigation plan, Assumption log | Risk Matrix, Top Risk List | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations |
Tags1 shared | RiskDecisionFailurePlanning | RiskDecisionPrioritizationAssessment | ArchitectureQualityRiskTradeoffsStakeholders |
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