What Is Amazon Seller refers to anyone who sells products on Amazon’s marketplace. As an Amazon seller, you can list items for sale, manage inventory, and fulfill orders through Fulfillment by Amazon (FBA) or Fulfillment by Merchant (FBM). Amazon offers different selling plans for individuals and businesses, allowing you to choose the best option for your needs. Whether you’re a small business owner or a large retailer, becoming an Amazon seller opens up access to a global customer base and a wealth of e-commerce tools to help you succeed.