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Selected:ATAM (Architecture Tradeoff Analysis Method)Blameless Postmortem Learning Card Assumption Mapping

Criterion	Architecture ATAM (Architecture Tradeoff Analysis Method)	DevOps Blameless Postmortem	Product Discovery Learning Card	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.	After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures.	The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible.	When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.
Complexitydifferent	High	Medium	Low	Medium
Timedifferent	Several meetings plus preparation and analysis; total effort depends on scope	30-90 min	25-40 min	45-60 min
Participantsdifferent	Evaluation team, architects, and relevant stakeholders	3-12	1-5	2-8
Formatsame	Workshop + async	Workshop + async	Workshop + async	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	Postmortem Doc, Action Items, Timeline	Learning Card with evidence and next action	Assumption map, Test backlog, Risk ranking
Tagsno overlap	ArchitectureQualityRiskTradeoffsStakeholders	Site Reliability EngineeringIncidentLearningReliability	ExperimentsValidationDiscoveryLearning	AssumptionsRiskExperimentsValidation

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