us fulfillment services are companies or platforms that help businesses manage their inventory, order processing, and shipping. Fulfillment services typically include storage, picking, packing, and shipping of products directly to customers. For e-commerce businesses, using a fulfillment service can help reduce overhead costs, improve efficiency, and ensure that orders are processed quickly and accurately. Popular U.S. fulfillment providers include ShipBob, ShipMonk, and Fulfillment.com.