There used to be FTP services in the 90s that served millions of users from a single machine. (Sorry can't find the reference right now). Even production Twitt

There used to be FTP services in the 90s that served millions of users from a single machine. (Sorry can't find the reference right now). Even production Twitter in 2023 is estimated to be able to fit on a very beefy machine: https://thume.ca/2023/01/02/one-machine-twitter/ https://thume.ca/2023/01/02/one-machine-twitter/ Of course we would use a CDN in 2023, which is cheating, but from a business point of view it is juse one machine you manage.