What is the MOST cost-effective way for the company to avoid Regional data transfer charges?
Launch the NAT gateway in each Availability Zone.
Replace the NAT gateway with a NAT instance.
Deploy a gateway VPC endpoint for Amazon S3.
Provision an EC2 Dedicated Host to run the EC2 instances.
Explanations:
Launching a NAT gateway in each Availability Zone would increase costs due to multiple NAT gateways, which doesn’t effectively reduce data transfer charges.
Replacing the NAT gateway with a NAT instance may lower some costs, but it does not eliminate Regional data transfer charges and may introduce other overheads.
Deploying a gateway VPC endpoint for Amazon S3 allows EC2 instances to access S3 directly without going through the NAT gateway, thus avoiding Regional data transfer charges entirely.
Provisioning an EC2 Dedicated Host does not impact data transfer charges and is generally more expensive, making it an ineffective solution for