Disclaimer: I wrote this article and made this website.
There was some talk of this issue in the recent fediverse inefficiencies thread. I’m hopeful that in the future we’ll have a decentralized solution for file hosting but for now I deeply believe that users should pay for their own file hosting.
The files are uploaded to two separate S3 buckets. One is backed by Wasabi and the other is Backblaze. So if one fails, randomly bans my account, etc then I can switch the primary to the other and setup another mirror afterwards.
Compute is hosted by fly.io and the CDN is bunny.net