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Selected:Time Blocking ATAM (Architecture Tradeoff Analysis Method)Failure Mode and Effects Analysis Fishbone Diagram

Criterion	Operations Time Blocking	Architecture ATAM (Architecture Tradeoff Analysis Method)	Operations Failure Mode and Effects Analysis	Operations Fishbone Diagram
Purposedifferent	With a calendar that grows on request, the method makes available time explicit again. It combines appointments, focus work, and buffer into a more realistic day structure.	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 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	Low	High	High	Low
Timedifferent	15-30 min Planung, laufend	Several meetings plus preparation and analysis; total effort depends on scope	2-6 h	30-60 min
Participantsdifferent	1	Evaluation team, architects, and relevant stakeholders	3-10	2-8
Formatdifferent	Async	Workshop + async	Workshop	Workshop
Outputdifferent	Blocked Calendar, Capacity View, Focus Plan	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	Fishbone Diagram, Cause Categories, Investigation Backlog
Tagsno overlap	PlanningTime managementFocus	ArchitectureQualityRiskTradeoffsStakeholders	RiskQualityOperationsRoot cause	Root causeQualityOperations

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