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Selected:Opportunity Solution TreeATAM (Architecture Tradeoff Analysis Method)Assumption SurfacingArchitecture Communication Canvas
| Criterion |  Product Discovery Opportunity Solution Tree |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making Assumption Surfacing |  Architecture Architecture Communication Canvas |
|---|---|---|---|---|
Purposedifferent | When discovery keeps swinging between goals, ideas, and learning loops, it creates clear steering logic. It connects the desired outcome, opportunities, and experiments into a legible structure. | 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 Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. |
Complexitydifferent | Medium | High | Low | Medium |
Timedifferent | 1-2 h Setup, laufend | Several meetings plus preparation and analysis; total effort depends on scope | 45-90 min | 60-120 min |
Participantsdifferent | 2-6 | Evaluation team, architects, and relevant stakeholders | 2-8 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Opportunity Solution Tree, Experiment Backlog, Learning Log | 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 | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | DiscoveryOutcomesExperimentsOpportunity | ArchitectureQualityRiskTradeoffsStakeholders | AssumptionsRiskDecisionDiscovery | ArchitectureCommunicationStakeholdersCanvas |