Order fulfillment is defined as the steps involved in receiving, processing and delivering orders to customers. An order fulfillment service is a service offered by 3PL companies that provide storage, picking, packing, and shipping to sellers.
An order fulfillment company picks up the order, stores them in inventory, packs them and ships the order to the customers on behalf of the seller.
It is the process of receiving the goods, processing them and delivering the orders to customers. The process starts with a customer placing an order and ends once they receive it. However, if a customer wants to return their product, order fulfillment involves returns (reverse logistics) as well.