Are you referring to third party seller sales on the amazon.com websites? That's completely different and separate issue from AWS customer data (for example so

Are you referring to third party seller sales on the amazon.com websites? That's completely different and separate issue from AWS customer data (for example someone running e-commerce software on a linux VM). 3rd party seller sales pay Amazon commission on each sale - deciding which products are selling well is just a matter of Amazon doing a SQL call on their own sales database (much like a physical retailer may see what brands/products are selling well)