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

Criterion	DevOps Blameless Postmortem	Product Discovery Learning Card	Architecture ATAM (Architecture Tradeoff Analysis Method)	Product Discovery Assumption Mapping
Purposedifferent	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.	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	Medium	Low	High	Medium
Timedifferent	30-90 min	25-40 min	Several meetings plus preparation and analysis; total effort depends on scope	45-60 min
Participantsdifferent	3-12	1-5	Evaluation team, architects, and relevant stakeholders	2-8
Formatsame	Workshop + async	Workshop + async	Workshop + async	Workshop + async
Outputdifferent	Postmortem Doc, Action Items, Timeline	Learning Card with evidence and next action	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	Site Reliability EngineeringIncidentLearningReliability	ExperimentsValidationDiscoveryLearning	ArchitectureQualityRiskTradeoffsStakeholders	AssumptionsRiskExperimentsValidation

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