You would have to go through the pitch notes from 19 on as they have made more than one. Last thread people got upset and said they didn’t want to read all that so I quote the short version.
EAS FC will always try to connect you to online matches on your best game data center. Although that’s often the nearest one, this isn’t always the case.
Internet service providers (ISP) generally don’t send data from Point A to Point B directly. They route this data across locations, sometimes across the globe. This can be a physical networking infrastructure limitation of some ISPs or part of their business model. These decisions are ultimately handled by ISPs based on their unique needs and situations.
In some cases, your connection to a game data center is the best connection available at the moment, even if it’s farther away. However, your connection can be routed elsewhere if internet issues impact the route that your network traffic would normally take, or if one of our game data centers is experiencing technical problems.
EAS FC uses game data centers so that someone else’s connection doesn’t impact your own gameplay. The game data center handles the distribution of gameplay information to all players.
The center collects inputs from your game at a set interval of time, and then sends this information back to everyone else in a match. This happens at the same time for all players and is determined by their individual connections.
For example, if one player is streaming 4K movies and trying to play on a weak Wi-Fi signal, their activities shouldn’t impact anyone else in that match. The game data center still sends the information back at the same time.
A game data center acts as the host of the match in multiplayer matches.
If you meant links to the ea posts explaining it. Here are a couple.
https://forums.ea.com/discussions/fc-25-technical-issues-en/connection-lag-spikes-during-games-/11983466
https://forums.ea.com/discussions/fc-25-technical-issues-en/inconsistent-and-high-ping/11974200
