Amazon Fulfillment Web Service (Amazon FWS) allows merchants to access Amazon.com’s world-class fulfillment capabilities through a simple web services interface. Amazon FWS makes it easy for merchants and developers to programmatically integrate the benefits of Fulfillment by Amazon (FBA) into their own web sites or other sales channels. With FBA, merchants can store inventory in Amazon’s warehouses and Amazon will pick, pack, and ship products directly to merchant’s customers.