Which solution meets these requirements MOST cost-effectively?
Create a dashboard by using AWS Systems Manager OpsCenter. Configure visualizations for Amazon CloudWatch metrics that are associated with the EC2 instances and their EBS volumes. Review the dashboard periodically, and identify usage patterns. Rightsize the EC2 instances based on the peaks in the metrics.
Turn on Amazon CloudWatch detailed monitoring for the EC2 instances and their EBS volumes. Create and review a dashboard that is based on the metrics. Identify usage patterns. Rightsize the EC2 instances based on the peaks in the metrics.
Install the Amazon CloudWatch agent on each of the EC2 instances. Turn on AWS Compute Optimizer, and let it run for at least 12 hours. Review the recommendations from Compute Optimizer, and rightsize the EC2 instances as directed.
Sign up for the AWS Enterprise Support plan. Turn on AWS Trusted Advisor. Wait 12 hours. Review the recommendations from Trusted Advisor, and rightsize the EC2 instances as directed.
Explanations:
While using AWS Systems Manager OpsCenter to create a dashboard can help visualize EC2 and EBS metrics, it requires periodic reviews and may not provide timely insights. Additionally, it does not leverage automated tools like AWS Compute Optimizer or Trusted Advisor, which can provide more direct recommendations for rightsizing based on usage data.
Turning on Amazon CloudWatch detailed monitoring and creating a dashboard can help identify usage patterns. However, this option still relies on manual analysis and does not provide automated recommendations for rightsizing the EC2 instances. The process may take longer to identify optimal instance sizes effectively.
Installing the Amazon CloudWatch agent and enabling AWS Compute Optimizer allows for more detailed monitoring and analysis of EC2 instance utilization. Compute Optimizer provides automated, actionable recommendations based on collected usage data, making this the most efficient and cost-effective approach for rightsizing instances.
Signing up for the AWS Enterprise Support plan and using AWS Trusted Advisor can provide valuable insights; however, this option involves additional costs associated with the Enterprise Support plan. Trusted Advisor also does not offer as in-depth analysis or tailored recommendations compared to AWS Compute Optimizer.
I estimate that the answer is:
Install the Amazon CloudWatch agent on each of the EC2 instances. Turn on AWS Compute Optimizer, and let it run for at least 12 hours. Review the recommendations from Compute Optimizer, and rightsize the EC2 instances as directed.