The DCs in Azure are grouped based upon the Azure regions they reside in.
DCs in South Central US - PLANNED
The DCs in the South Central US region (aka ZSC DCs) will support authentication and authorization for domain-joined devices connected to the Virtual WAN in the same region. The ZSC DCs will be in the Austin-ZSC site and will use InCommon certificates The ZSC DCs will be deployed in early-to-mid 2023.
...