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Selected:ATAM (Architecture Tradeoff Analysis Method)Test Card Failure Mode and Effects Analysis Assumption Mapping

Criterion	Architecture ATAM (Architecture Tradeoff Analysis Method)	Product Discovery Test Card	Operations Failure Mode and Effects Analysis	Product Discovery Assumption 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.	The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success.	For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability.	When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.
Complexitydifferent	High	Low	High	Medium
Timedifferent	Several meetings plus preparation and analysis; total effort depends on scope	20-35 min	2-6 h	45-60 min
Participantsdifferent	Evaluation team, architects, and relevant stakeholders	1-5	3-10	2-8
Formatdifferent	Workshop + async	Workshop + async	Workshop	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	Test Card with a pre-set threshold	FMEA Table, Risk Priority, Mitigation Actions	Assumption map, Test backlog, Risk ranking
Tagsno overlap	ArchitectureQualityRiskTradeoffsStakeholders	ExperimentsValidationDiscoveryHypothesis	RiskQualityOperationsRoot cause	AssumptionsRiskExperimentsValidation

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