No, cloud computing is definitely not PR or fluff since everyone is using it for real. But you have to use it correctly.
Gaikai is a difficult service to launch. I'm guessing most of the third party CDN and edge server providers don't have GPU in their servers. The latency requirement should be more stringent. Sony may have to do it themselves.
Adobe's Creative cloud probably have GPUs on them for the heavy image/video processing jobs. Most of the MMO and server games don't render on the servers.
Xbox One's cloud servers are CPU centric like everyone else. So MS can share their servers with the rest of the Windows 8 cloud application servers.
Gaikai is a difficult service to launch. I'm guessing most of the third party CDN and edge server providers don't have GPU in their servers. The latency requirement should be more stringent. Sony may have to do it themselves.
Adobe's Creative cloud probably have GPUs on them for the heavy image/video processing jobs. Most of the MMO and server games don't render on the servers.
Xbox One's cloud servers are CPU centric like everyone else. So MS can share their servers with the rest of the Windows 8 cloud application servers.