There has been long threads and talks about having a US MMO server as well at least.
Just use the search feature.
People are worried about FPS and lag a lot when it comes to combat.
As for each of the regional servers, they will be composed of "servers" or something.
I don't know if the transition between servers is seamless or not, but I think so?
For a map of it look at this:
https://lifeisfeudal.com/billing/status.phpI wasn't part of the MMO tests, so most of this is of my own understanding and what I write on the forum.
The whole MMO server system may even change during MMO development once it is resumed.