@ifrit In this context, what is the difference? I don't know of any server that runs more than one instance. Particularly when we talk about Mastodon, because it's not very efficient and we often see the opposite: one instance with multiple servers (e.g. web server, sidekiq, database...) and in all cases it's still one public facing server handling all the traffic.
@starsider "I don't know of any server that runs more than one instance", but could be "and we often see the opposite: one instance with multiple servers", because instance =/ server ;)