There is no official confirmation yet.
According to a reliable insider known as TheGhostOfHope, who is active in the Call of Duty community, Black Ops 7 is expected to run on Azure servers.
The source suggests this would be a sensible move for Microsoft: it could avoid paying for Amazon’s cloud services by using its own infrastructure.
While TheGhostOfHope’s claim hasn’t been officially verified, the same information was previously reported by the Italian outlet Powned.it and the content creator TheXclusiveAce.
Microsoft has previously encountered server problems that disrupted several of its games and affected the Xbox service.
Source: iXBT.games