Relay locations and regions
As a developer using Relay, you can allow players to select a Relay server from a list of available regions. By selecting the closest Relay server, the player can minimize the potential latency and guarantee the smoothest possible experience for their game sessionIn the Relay service, a game session is an active match between multiple players connected through a Relay server. One player is the host player to which the other connecting players communicate using the Relay message protocol..
You can retrieve a list of all available regions with the Allocations API /regions endpoint.
However, you do not need to include a region with an allocation request. If you omit the region, the Allocations service uses QoS.
The following list contains the key regions across the globe:
Southeast Asia - Singapore
West Europe - London
East United States - North Virginia
Central United States - Iowa
West United States - Los Angeles