1. Amazon Vendor: Amazon buys products from the retailer or manufacturer and sells them on their own.
2. Fulfillment By Amazon: The retailer or manufacturer sells their products on Amazon's platform, using Amazon's warehouses and logistics for delivery. For this they are either paying commission or a flat fee.
3. Fulfillment By Merchant: The retailer or manufacturer sells their products on Amazon's platform, but are using their own warehouses and logistics for delivery. For this they are either paying commission or a flat fee.