What server side solution can I use for my open-world game?

I am starting development on an open world game, in which i plan to have a fairly large map. As a new developer I just want to ask a few questions regarding what it would look like server side to accomplish this.

The way I understand it, world origin shifting can compensate for the performance drop for open-world maps in single player, but as far as multiplayer goes I’m unsure of what can be done. Is anyone familiar with any games that have implemented their own solution to this problem? I have a company willing to develop the server structure for me, but they need to know exactly what I would need before they can start.

I’ve been throwing around the idea of having the world origin point staying at the center of each individual player on the map, but I’m wondering if this would cause major desync issues in rendering player locations exactly.

Any help is appreciated.

With regards,