Question

A company runs a fleet of EC2 instances in private subnets that continuously download and upload large volumes of data to Amazon S3 within the same Region. All traffic currently flows through a NAT gateway, and the monthly bill shows very high NAT gateway data processing charges. A solutions architect must reduce these costs while keeping the S3 traffic off the public internet. What is the MOST cost-effective solution?

Accepted Answer

Create a gateway VPC endpoint for Amazon S3 and update the route tables of the private subnets to route S3 traffic through the endpoint.

Answer

Replace the NAT gateway with a NAT instance on a smaller EC2 type to lower the hourly cost of processing S3 traffic.

Answer

Create an interface VPC endpoint (PrivateLink) for Amazon S3 and point application traffic to the endpoint's elastic network interfaces.

Answer

Enable S3 Transfer Acceleration on the bucket so instances upload through the nearest edge location instead of the NAT gateway.