AWS

Slash AWS NAT GW Expsne by 78%

Walter Derezinski

Nov 28, 2023

Are you using AWS NAT Gateway? Do you have the lowest-cost configuration?

First, what is a NAT Gateway? A NAT Gateway allows instances in a private subnet to connect to services outside your VPC without allowing external services to initiate a connection.

The cost for using a NAT Gateway is $0.045 per GB. However, if you are accessing AWS services, you can cut this cost by approximately 78% using PrivateLink, with charges starting at $0.01 per GB and decreasing.

Two essential PrivateLink connections to enable are the S3 and DynamoDB Gateway Endpoints. Enabling these is straightforward—just turn them on, and AWS automatically handles the routing with no additional changes needed.

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