Xbox Cloud Gaming is a cloud gaming service as part of Xbox offered by Microsoft Gaming. Initially released in beta testing in November 2019, the service later launched for subscribers of Xbox Game Pass Ultimate on September 15, 2020. Xbox Game Pass cloud gaming is provided to subscribers of Ultimate at no additional cost. Xbox Cloud Gaming operates by linking the device to a remote server in the cloud. Development. The ideas for the cloud service came within Microsoft around 2016, around the same time that Kareem Choudhry developed the Xbox 360 backwards compatibility for the Xbox One.
https://en.wikipedia.org/wiki/Xbox_Cloud_Gaming