3PL means Third Party Logistics. The role of third party logistics is to outsource some eCommerce logistic activities.
The sector began as mainly to provide 3PL warehouses to customers without the space to store their own products. Alongside this, these companies developed inventory management and packing and shipping solutions for their clients.
Today, 3PL can service almost all aspects of the supply chain, providing a range of flexible storage and distribution services to their customers.