A company wants to optimize their Amazon EC2 costs. They have identified several instances that have less than 5% CPU utilization over the last 30 days. They want to automatically stop these instances. Which AWS service provides the simplest way to implement this automation?

Answer options:

AWS Cost Explorer

AWS Systems Manager (using Automation and CloudWatch Alarms)

AWS Trusted Advisor

AWS Compute Optimizer

How to approach this question

Identify the service that executes operational automation.

Full Answer

B.AWS Systems Manager (using Automation and CloudWatch Alarms)✓ Correct

While Trusted Advisor and Compute Optimizer identify idle instances, CloudWatch Alarms (with EC2 actions) or AWS Systems Manager Automation are required to actually execute the 'stop' action automatically.

Common mistakes

Selecting Trusted Advisor, which is only a reporting tool.

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