I'm less concerned with the technical aspects and more curious about the long term.
Federated instances, such as lemmy.world, are operated by individuals; What happens if they decide to stop doing so without handing the server/data off to someone else? Do all of our accounts created here disappear? What do other users see if they click through my profile from a post on a different federated server? What happens to all of the content created on the server in question?
What happens to accounts/history created here if the server shuts down?
Professional game dev for 25 years now. Started modding and level design back in the days of DOOM/Quake, which eventually led to a job in the industry.
I'm a designer primarily, but I also do quite a bit of engineering. I've worked mostly with heavily modified Source engine and, most recently, Unreal.