[thegeomaster]

I'd shy away from storing any non-volatile state on Hetzner. As I said, I'd mostly consider it for stateless compute-bound applications.

If I was looking to scale up an existing operation considerably and minimize costs as much as possible, I'd consider spinning up e.g. a Postgres cluster or minio on their infra, which would be significantly cheaper than RDS or S3. But it's not something that I would gladly do---the storage deals provided by hyperscalers are quite reasonable, as you say.