A company has applications running in private subnets that frequently access Amazon DynamoDB. They are currently routing this traffic through a NAT Gateway, resulting in high data transfer costs. How can they eliminate the NAT Gateway data transfer costs for DynamoDB?

Answer options:

Create an Interface VPC Endpoint (AWS PrivateLink) for DynamoDB.

Create a Gateway VPC Endpoint for DynamoDB and update the route tables.

Move the EC2 instances to a public subnet.

Use AWS Direct Connect.

How to approach this question

Identify the free VPC endpoint type for DynamoDB.

Full Answer

B.Create a Gateway VPC Endpoint for DynamoDB and update the route tables.✓ Correct

Gateway VPC Endpoints are available for S3 and DynamoDB. They are completely free and allow resources in private subnets to access these services without going through a NAT Gateway.

Common mistakes

Choosing Interface Endpoint, which incurs an hourly charge and is not the standard for DynamoDB.

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