What should the SysOps administrator do to meet this requirement?
Purchase regional Reserved Instances (RIs) for immediate cost savings. Review and take action on the EC2 rightsizing recommendations in Cost Explorer. Exchange the RIs for the optimal instance family after rightsizing.
Purchase zonal Reserved Instances (RIs) for the existing instances. Monitor the RI utilization in the AWS Billing and Cost Management console. Make adjustments to instance sizes to optimize utilization.
Review and take action on AWS Compute Optimizer recommendations. Purchase Compute Savings Plans to reduce the cost that is required to run the compute resources.
Review resource utilization metrics in the AWS Cost and Usage Report. Rightsize the EC2 instances. Create On-Demand Capacity Reservations for the rightsized resources.
Explanations:
Purchasing regional Reserved Instances (RIs) before rightsizing is not an effective strategy. Rightsizing recommendations should be acted upon first, and the optimal instance family should be identified before purchasing RIs. RIs are long-term commitments, and exchanging them after rightsizing may cause unnecessary costs.
Purchasing zonal Reserved Instances (RIs) for existing instances before rightsizing does not align with the need for performance optimization. RIs do not offer flexibility in adjusting to changing workload requirements. It is more efficient to first review performance metrics and rightsizing recommendations.
AWS Compute Optimizer provides rightsizing recommendations based on the workload’s needs, ensuring that resources match the application’s performance and budgetary requirements. Purchasing Compute Savings Plans helps to reduce costs for compute resources while maintaining flexibility in resource allocation.
The AWS Cost and Usage Report is not the appropriate tool for rightsizing EC2 instances. Resource utilization metrics should be reviewed in the AWS Compute Optimizer or CloudWatch to identify performance issues. On-Demand Capacity Reservations do not address rightsizing and are better suited for ensuring capacity during high-demand periods.
I estimate that the answer is:
Review and take action on AWS Compute Optimizer recommendations. Purchase Compute Savings Plans to reduce the cost that is required to run the compute resources.