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Selected:ATAM (Architecture Tradeoff Analysis Method)ALPEN Method Eat the Frog Failure Mode and Effects Analysis

Criterion	Architecture ATAM (Architecture Tradeoff Analysis Method)	Operations ALPEN Method	Operations Eat the Frog	Operations Failure Mode and Effects Analysis
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 an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time.	The method protects energy and attention for the task that creates the largest progress and is often postponed.	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.
Complexitydifferent	High	Low	Low	High
Timedifferent	Several meetings plus preparation and analysis; total effort depends on scope	10-20 min daily	15-90 min daily	2-6 h
Participantsdifferent	Evaluation team, architects, and relevant stakeholders	1	1	3-10
Formatdifferent	Workshop + async	Async	Async	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 Plan, Time Estimates, Review Notes	Priority Task, Completion Note, Daily Focus	FMEA Table, Risk Priority, Mitigation Actions
Tagsno overlap	ArchitectureQualityRiskTradeoffsStakeholders	PlanningTime managementProductivityOperations	PrioritizationProductivityFocusExecution	RiskQualityOperationsRoot cause

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