@ProPublica
Feds have their own separate cloud at MS. Even the guy responsible for the implementation of PRISM at MS had zero access. Makes sense since PRISM was pointed at a constantly growing (~7000 American targets eight years ago) list none of which were Feds.

There was an article recently about the gov't cloud escorts recently who did have access. I don't remember the details, but I do remember it was essentially fear mongering click bait.