that's not how I understood the history: AWS was a result of a strategy of making amazon's infrastructure into its own business unit (with the basic idea that a

that's not how I understood the history: AWS was a result of a strategy of making amazon's infrastructure into its own business unit (with the basic idea that any future internal projects should also be suitable to sell to someone else, because they would be). It took quite some time for them to migrate from 'internal tool' to 'suitable to sell to someone else', they didn't just do it because they happened to have those tools.