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Selected:ATAM (Architecture Tradeoff Analysis Method)Ivy Lee Method Failure Mode and Effects Analysis Fishbone Diagram

Criterion	Architecture ATAM (Architecture Tradeoff Analysis Method)	Operations Ivy Lee Method	Operations Failure Mode and Effects Analysis	Operations Fishbone Diagram
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.	With a restless workday full of too many open items, the method creates radical simplicity. It directs attention to a short sequence instead of a broad, still-open field.	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 a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers.
Complexitydifferent	High	Low	High	Low
Timedifferent	Several meetings plus preparation and analysis; total effort depends on scope	5-10 min daily	2-6 h	30-60 min
Participantsdifferent	Evaluation team, architects, and relevant stakeholders	1	3-10	2-8
Formatdifferent	Workshop + async	Async	Workshop	Workshop
Outputdifferent	Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations	Daily Priority List, Completion Notes	FMEA Table, Risk Priority, Mitigation Actions	Fishbone Diagram, Cause Categories, Investigation Backlog
Tagsno overlap	ArchitectureQualityRiskTradeoffsStakeholders	PrioritizationProductivityExecution	RiskQualityOperationsRoot cause	Root causeQualityOperations

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