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

Criterion	Product Discovery Test Card	Operations Failure Mode and Effects Analysis	Architecture ATAM (Architecture Tradeoff Analysis Method)	Product Discovery Assumption Mapping
Purposedifferent	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.	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.
Complexitydifferent	Low	High	High	Medium
Timedifferent	20-35 min	2-6 h	Several meetings plus preparation and analysis; total effort depends on scope	45-60 min
Participantsdifferent	1-5	3-10	Evaluation team, architects, and relevant stakeholders	2-8
Formatdifferent	Workshop + async	Workshop	Workshop + async	Workshop + async
Outputdifferent	Test Card with a pre-set threshold	FMEA Table, Risk Priority, Mitigation Actions	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
Tagsno overlap	ExperimentsValidationDiscoveryHypothesis	RiskQualityOperationsRoot cause	ArchitectureQualityRiskTradeoffsStakeholders	AssumptionsRiskExperimentsValidation

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