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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations After-Action Review |  Delivery Communication Plan |
|---|---|---|---|
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. | After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. | 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. |
Complexitydifferent | High | Low | Low |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 20-45 min | 45-90 min |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 3-12 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Lessons learned, Action items, Event summary | Communication Plan, Channel Matrix, Message Cadence |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | LearningOperationsImprovement | CommunicationStakeholdersDeliveryPlanning |
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