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Selected:ATAM (Architecture Tradeoff Analysis Method)Assumption SurfacingArchitecture Inception CanvasAlignment Mapping
| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making Assumption Surfacing |  Architecture Architecture Inception Canvas |  Facilitation Alignment Mapping |
|---|---|---|---|---|
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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | The Architecture Inception Canvas bundles the first architecture questions into a compact decision picture. It fits when an initiative is still in motion but still needs clear guardrails. | When several people work toward one goal but hold different mental maps, Alignment Mapping makes the discrepancies visible. It arranges goals, assumptions, and priorities so shared direction becomes verifiable. |
Complexitydifferent | High | Low | Low | Medium |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 45-90 min | 1-2 h | 1-2 h |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 2-8 | 3-8 | 4-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | 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 | Assumption List, Critical Assumptions, Learning Plan | Inception Canvas, Risks, Goal List, Open Questions | Alignment Map, Open Issues, Decision Questions |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | AssumptionsRiskDecisionDiscovery | AlignmentArchitectureCanvas | AlignmentStakeholdersStrategyFacilitation |