A company has a large number of Amazon EC2 instances in a private subnet that need to download updates from the internet. Currently, they are using a NAT Gateway. The finance team has noticed high data processing charges from the NAT Gateway. <br/><br/>How can the solutions architect reduce these costs if the updates are hosted in Amazon S3?

Answer options:

Replace the NAT Gateway with a NAT Instance.

Create a Gateway VPC Endpoint for Amazon S3.

Move the EC2 instances to a public subnet.

Create an Interface VPC Endpoint for Amazon S3.

How to approach this question

Recognize that S3 traffic through a NAT Gateway costs money, but through a Gateway Endpoint it is free.

Full Answer

B.Create a Gateway VPC Endpoint for Amazon S3.✓ Correct

Data transferred through a NAT Gateway incurs processing charges. By creating a Gateway VPC Endpoint for S3, traffic destined for S3 stays on the AWS network and bypasses the NAT Gateway. Gateway endpoints are provided at no additional charge.

Common mistakes

Selecting Interface Endpoint, which costs money.

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