https://www.gamespot.com/articles/heres-the-latest-on-call-of-duty-ww2s-launch-issue/1100-6454917/

Sledgehammer Games has updated Call of Duty: WWII players on the current state of the game, following the issues at launch that impacted the online experience. In the wake of the issues, Sledgehammer dropped dedicated servers in favour of a P2P setup.

The good news today is that dedicated servers are back on PlayStation 4 in the US, while Sledgehammer brought them back on Xbox One today, but only for a limited time for the purposes of testing. Additionally, Sledgehammer is now adding a "limited" number of dedicated servers to places throughout Europe before launching elsewhere.