I've heard from the CEO of a large company that partners with Amazon a very similar figure for the revenue of AWS.
From the same source, I've heard that some services Amazon.com relies on runs on competitors' infrastructure, even though AWS offers the same service, and no, not as a backup service but as the primary solution for that particular service.
From the same source, I've heard that some services Amazon.com relies on runs on competitors' infrastructure, even though AWS offers the same service, and no, not as a backup service but as the primary solution for that particular service.