what’s fba on amazon refers to Fulfillment by Amazon, a service that allows sellers to store their products in Amazon’s warehouses, from where Amazon takes care of the picking, packing, and shipping of the products directly to customers. This service also includes customer service and returns management. By using FBA, sellers can focus on sourcing and marketing their products while Amazon handles the logistics, making it an efficient and cost-effective solution for growing an e-commerce business.