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Selected:Game Day ATAM (Architecture Tradeoff Analysis Method)Failure Scenario Analysis Fishbone Diagram

Criterion	DevOps Game Day	Architecture ATAM (Architecture Tradeoff Analysis Method)	Engineering Failure Scenario Analysis	Operations Fishbone Diagram
Purposedifferent	In preparing for rare incidents, the method tests response capability under controlled conditions. It shows where assumptions about stability, roles, and recovery are too optimistic.	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.	In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage.	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	High	Medium	Low
Timedifferent	Halber Tag	Several meetings plus preparation and analysis; total effort depends on scope	1-3 h	30-60 min
Participantsdifferent	5-20	Evaluation team, architects, and relevant stakeholders	3-8	2-8
Formatdifferent	Workshop	Workshop + async	Workshop	Workshop
Outputdifferent	Simulation Notes, Gaps List, Updated Runbooks	Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations	Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions	Fishbone Diagram, Cause Categories, Investigation Backlog
Tagsno overlap	ResilienceOperationsIncident	ArchitectureQualityRiskTradeoffsStakeholders	FailureResilienceRisk	Root causeQualityOperations

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