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DOP-C02 · Question #439

A DevOps team deploys an ECS app behind an ALB using CodeDeploy with all-at-once strategy. Recent deployment increased response times, requiring rollback. The team wants a deployment strategy to monit

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Submitted by lukas.cz· Mar 6, 2026SDLC Automation

Question

A DevOps team deploys an ECS app behind an ALB using CodeDeploy with all-at-once strategy. Recent deployment increased response times, requiring rollback. The team wants a deployment strategy to monitor new versions before full traffic shift and rollback quickly if issues occur. Which steps meet these requirements? (Select TWO.)

Options

  • AUse CodeDeployDefault.ECSCanary10Percent5Minutes deployment configuration.
  • BUse CodeDeployDefault.ECSLinear10PercentEvery3Minutes deployment configuration.
  • CCreate a CloudWatch alarm on ALB UnHealthyHostCount and associate it with the deployment
  • DCreate a CloudWatch alarm on ALB TargetResponseTime and associate it with the deployment
  • ECreate a CloudWatch alarm on ALB TargetConnectionErrorCount and associate it with the

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Topics

#CodeDeploy#ECS deployment#Canary deployment#Automated rollback
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