> Amazon sells _everything_ Amazon itself, sells many things. Everything listed on Amazon is not offered by Amazon tho. Much of Amazon's wide breadth of invent

> Amazon sells _everything_ Amazon itself, sells many things. Everything listed on Amazon is not offered by Amazon tho. Much of Amazon's wide breadth of inventory is supplied by independent retailers. So, Amazon is both a retailer, and an operator of a marketplace (of 3rd party sellers).