Some of the cost-efficiencies are achieved by architecting the software somewhat differently. The most important one is that the user requests and upload URL an

Some of the cost-efficiencies are achieved by architecting the software somewhat differently. The most important one is that the user requests and upload URL and then posts to that, which saves us from needing big, expensive load balancers. At the same time, we're working with partners who will abstract our B2 API to make it akin to the S3 API. Gleb from Backblaze