In this web content, the author explores the high costs of data transfer on AWS and provides a clever method to significantly reduce those costs. They highlight the rates for data transfer in different scenarios within AWS regions and to the public Internet. The author introduces AWS PrivateLink and VPC endpoints as a solution to avoid data transfer costs and improve security. They then discuss the cost-saving potential of using S3 for data transfer, as uploading and downloading data to and from S3 is free, with only storage and API request costs to consider. The author conducts experiments to demonstrate the effectiveness of this cost-saving method and concludes that it can result in over 99% savings.
https://www.bitsand.cloud/posts/slashing-data-transfer-costs/