According to Amazon.com, Amazon is a Fortune 500 company based in Seattle, Washington. It is the global leader in e-commerce. Amazon.com has significantly expanded their product offerings, international sites, and worldwide network of fulfillment and customer service centers.
For any misrepresentation some people may have, Amazon bases their orders on demand for their titles. They keep a full stock of inventory on hand, so it is in the publisher’s best interest to make sure Amazon has plenty of stock prior to their published date.