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Selected:Test Card ATAM (Architecture Tradeoff Analysis Method)Failure Mode and Effects Analysis Fake Door Test

Criterion	Product Discovery Test Card	Architecture ATAM (Architecture Tradeoff Analysis Method)	Operations Failure Mode and Effects Analysis	Product Discovery Fake Door Test
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.	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 demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small.
Complexitydifferent	Low	High	High	Medium
Timedifferent	20-35 min	Several meetings plus preparation and analysis; total effort depends on scope	2-6 h	1-5 Tage
Participantsdifferent	1-5	Evaluation team, architects, and relevant stakeholders	3-10	Nutzertraffic
Formatdifferent	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	FMEA Table, Risk Priority, Mitigation Actions	Click Data, Interest Signal, Learning Decision
Tagsno overlap	ExperimentsValidationDiscoveryHypothesis	ArchitectureQualityRiskTradeoffsStakeholders	RiskQualityOperationsRoot cause	ValidationExperimentsDemandDiscovery

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