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| Criterion |  Decision Making Pre-Mortem |  Decision Making Trade-off Analysis |  Delivery Communication Plan |  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. | With limited resources, quality, speed, cost, and risk almost always compete with each other. Trade-off Analysis makes these tensions explicit and prevents decisions from producing hidden side effects. | When many people need to be informed in parallel and messages would otherwise arrive unevenly or too late, a Communication Plan orders communication reliably. Channels, audiences, and cadences interlock so important information doesn't get lost. | 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 | Medium | Low | High |
Timedifferent | 20–45 min | 45-120 min | 45-90 min | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | Small cross-functional group | 2-8 | 2-6 | Evaluation team, architects, and relevant stakeholders |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Risk list, Mitigation plan, Assumption log | Trade-off Matrix, Criteria List, Decision Rationale, Accepted Downsides | Communication Plan, Channel Matrix, Message Cadence | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations |
Tagsno overlap | RiskDecisionFailurePlanning | TradeoffsDecisionCriteriaOptions | CommunicationStakeholdersDeliveryPlanning | ArchitectureQualityRiskTradeoffsStakeholders |