Since cloudflare is already sponsoring it, I do wonder how much of this type of service can be implemented all on cloudflare. Their stack could be great for tile serving.
You can run containers now on CF, I think this was one of the last barriers that might have prevented a lot of software being migrated without a re-architecting.
Most stuff could run there now.
I’m also surprised to see nginx and hetzner in this project. Why not entirely Cloudflare: workers, R2, and cache