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Question 39

An application runs on Amazon EC2 instances across multiple Availability Zones. The instances run in an Amazon EC2 Auto Scaling group behind an ApplicationLoad Balancer. The application performs best when the CPU utilization of the EC2 instances is at or near 40%.What should a solutions architect do to maintain the desired performance across all instances in the group?

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Explanation

Scaling based on a schedule allows you to set your own scaling schedule for predictable load changes. For example, every week the traffic to your web application starts to increase on Wednesday, remains high on Thursday, and starts to decrease on Friday. You can configure Application Auto Scaling to increase capacity on Wednesday and decrease capacity on Friday.

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