what is difference between amazon fba and fbm lies in how inventory is handled. Fulfillment by Amazon (FBA) means that sellers store their products in Amazon’s fulfillment centers, and Amazon takes care of picking, packing, shipping, and customer service. Fulfillment by Merchant (FBM) means that the seller is responsible for storing, packing, and shipping their products directly to customers. FBA offers greater scalability and benefits like Prime eligibility, while FBM gives sellers more control over their inventory and shipping processes.