EC2 instances in a private subnet send a large amount of data to S3 in the same Region.
The current path uses a NAT Gateway, and the team wants to review charges in addition to transfer itself.
Which configuration should be considered to reduce data processing charges?
Even when the S3 transfer itself is free, a NAT Gateway path can add data processing charges. An S3 VPC endpoint can avoid an unnecessary NAT path.
Detailed explanation
Reserved Instances apply to EC2 pricing and do not discount NAT Gateway data processing.
Reserved Instances apply to EC2 pricing and do not discount NAT Gateway data processing.
A path change does not remove service pricing or security requirements, and a public route is not automatically appropriate.
A path change does not remove service pricing or security requirements, and a public route is not automatically appropriate.
An appropriate S3 VPC endpoint can keep S3 traffic off the NAT Gateway path and reduce NAT data processing charges.
An appropriate S3 VPC endpoint can keep S3 traffic off the NAT Gateway path and reduce NAT data processing charges.
A NAT Gateway can charge for data processing, so increasing the bytes through it can increase the additional charge.
A NAT Gateway can charge for data processing, so increasing the bytes through it can increase the additional charge.
Check official documentation
Compare the following points with the official documentation.
S3のVPCエンドポイントとNAT Gatewayのデータ処理料金をAWS公式資料で比較する。
Official references
What to confirm
サービス間の転送料金と、NAT Gatewayなど経路上のデータ処理料金を別項目として説明できる。
Key points
- NAT Gateway
- Data processing charge
- S3 VPC endpoint
Notes
- Environment:
- Data transfer pricing and free tiers can change by service and Region. Check the current AWS pricing page before implementation.
Foundation review
Transfer versus processing
A free S3 transfer can still be accompanied by NAT data processing charges.
Path optimization
Use an endpoint suited to the destination to avoid unnecessary intermediaries and public routes.