Square Enix is planning cross-data-center visitation. At first, this will be limited to the same physical server travel, but, later, it could expand to full region and cross-regional play.
if you have an existing Square Enix account with a registered Final Fantasy XIV license, you won’t be able to participate in the open beta. However, you’ll be able to play Final Fantasy XIV on Xbox with your existing Square Enix account and its associated characters once the full...
Your server will be in North America(NA), Europe(EU), and Japan(JP). Each region will have Data Centers(DC) which contain Worlds, and the Worlds within the DC will be able to do most content together (raiding, dungeons, and etc). ...