FBA - Fulfillment By Amazon
FBA stands for "Fulfillment by Amazon," and it is a service offered by Amazon that allows third-party sellers to store their products in Amazon's fulfillment centers. When an order is placed, Amazon will pick, pack, and ship the product to the customer, as well as provide customer service for any issues related to the order. This allows sellers to focus on other aspects of their business, such as marketing and product development, while still being able to offer their products to Amazon's large customer base.
You can also use a private company to provide a similar service, sometimes at less cost to you.
A private company that operates like FBA, or "Fulfillment by Amazon," would offer similar services to third-party sellers. This would include storing products in fulfillment centers and handling the pick, pack, and shipping of orders, as well as providing customer service for any issues related to the orders. The private company would likely have its own network of fulfillment centers and other infrastructure in place to support these services.