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AWS Compute Optimizer icon (AWS Architecture Icons)

AWS Compute Optimizer

Right-sizing recommendations

Uses machine learning to analyze usage metrics (CloudWatch) and recommend the right type/size for EC2, Auto Scaling groups, EBS, Lambda, ECS on Fargate, RDS…, pointing out where you are over- or under-provisioned.

  • Cost$ Low
  • Difficulty●●●●●
  • Costs money when idle?No
  • Serverless
  • In examsCLF · SAA · SOA

Scope: Regional (can aggregate multiple accounts via Organizations)

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Think of it asLike a tailor who re-measures you and suggests a smaller size that fits better and uses less fabric.

When to use it

✓ Use it when

You want rightsizing to cut costs or avoid running short on resources.

✗ Avoid it when

You need an overview of spending or Savings Plans purchase recommendations → Cost Explorer / Cost Optimization Hub.

Common uses

  • Finding EC2 instances that are too large for their load
  • Choosing a sensible Lambda memory size
  • Switching EBS gp2 to gp3 or reducing excess IOPS

What does it cost?

  • Pricing model: Basic recommendations are free; the enhanced infrastructure metrics feature (looks at longer data history) is charged per resource per hour.

Reference prices for us-east-1, updated October 14, 2026; they may have changed. Always check the AWS pricing page.

Related services

SAA-C03 study guide

Compute Optimizer is covered in these study modules:

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