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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making Constraint Analysis |  Decision Making Decision Matrix |  Decision Making Pre-Mortem |
|---|---|---|---|---|
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. | When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped. | When several options collide with several criteria, comparison quickly becomes subjective. A Decision Matrix makes the trade-off visible and brings weighting, criteria, and options into a shared logic. | 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. |
Complexitydifferent | High | Low | Medium | Low |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 30-90 min | 45-90 min | 20–45 min |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 2-8 | 2-8 | Small cross-functional group |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | 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 | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries | Decision Matrix, Scoring Rationale, Selected Option | Risk list, Mitigation plan, Assumption log |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | ConstraintsDecisionPlanningOptions | DecisionCriteriaScoringTradeoffs | RiskDecisionFailurePlanning |