"run on" - I suspect you're being fed a unicode pile of poo here.
More likely the have _something_ which runs on Azure. Fortune 500s are, pretty much by definition, quite large - and probably have tons of departments and sub departments. And at least one of those departments probably has a task of trying out new things, like Azure, by running something on it.
What surprises me is that nearly 20% of Fortune 500s _don't_ have something running on Azure.
Agreed. When I was looking at cloud providers recently I noticed that most of them make a claim along the lines of "$X percent of {Fortune 500,FTSE 100} companies use $OURPRODUCT" where $X is > 50%. My conclusions were:-
* Most major companies use more than one cloud provider
* "Use" is a very loose term here. It could mean anything from "the accounts team in some branch office uses S3 to back up their Sage data (or uses an online backup service that uses S3 in the back end)" to "they run their main product on our infrastructure".
Actually I don't think they do - to the best of my knowledge Office 365 didn't have any downtime as a result of this outage. And Yammer stayed up, so I assume they haven't yet migrated from AWS...
More likely the have _something_ which runs on Azure. Fortune 500s are, pretty much by definition, quite large - and probably have tons of departments and sub departments. And at least one of those departments probably has a task of trying out new things, like Azure, by running something on it.
What surprises me is that nearly 20% of Fortune 500s _don't_ have something running on Azure.
(I wonder what percentage "run on" Amazon)