AWS Cost Explorer and AWS Compute Optimizer are the two services that can identify rightsizing opportunities for Amazon EC2 instances:
- AWS Cost Explorer: Helps analyze costs and usage patterns, allowing you to identify underutilized EC2 instances that could be rightsized to save costs.
- AWS Compute Optimizer: Specifically designed to recommend optimal AWS resources for your workloads, including EC2 instance types, based on utilization metrics.
The other options are not designed for rightsizing:
- AWS Billing Conductor: Manages billing and cost allocation, not rightsizing recommendations
- Amazon CodeGuru: Focuses on code quality and performance optimization for applications
- Amazon SageMaker: A machine learning service, not related to infrastructure rightsizing
