When to apply this fix?
You should apply this fix if
- Apps and services (EC2, EKS, Lambdas etc.) in your account access S3 buckets
- If your compute resources are in a virtual private network (VPC)
- You set up a NAT Gateway for your VPC
Why apply this fix?
Most likely all your S3 access is going over the public internet and you are getting charged for both
- Egress traffic from S3
- NAT Gateway traffic
This simple low-risk cost-fix will eliminate these unnecessary costs.