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Selected:Test Card ATAM (Architecture Tradeoff Analysis Method)Assumption Mapping Assumption Surfacing

Criterion	Product Discovery Test Card	Architecture ATAM (Architecture Tradeoff Analysis Method)	Product Discovery Assumption Mapping	Decision Making Assumption Surfacing
Purposedifferent	The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success.	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 assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.	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.
Complexitydifferent	Low	High	Medium	Low
Timedifferent	20-35 min	Several meetings plus preparation and analysis; total effort depends on scope	45-60 min	45-90 min
Participantsdifferent	1-5	Evaluation team, architects, and relevant stakeholders	2-8	2-8
Formatsame	Workshop + async	Workshop + async	Workshop + async	Workshop + async
Outputdifferent	Test Card with a pre-set threshold	Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations	Assumption map, Test backlog, Risk ranking	Assumption List, Critical Assumptions, Learning Plan
Tagsno overlap	ExperimentsValidationDiscoveryHypothesis	ArchitectureQualityRiskTradeoffsStakeholders	AssumptionsRiskExperimentsValidation	AssumptionsRiskDecisionDiscovery

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