Direct answer. A 3PL (Third-Party Logistics provider) is an outside company that carries out one or more logistics operations, warehousing, transport, order picking, for a shipper, using its own resources. A 4PL (Fourth-Party Logistics provider) goes further: it manages the whole supply chain, including several 3PLs, without necessarily owning its own warehouses or trucks.
Two levels of logistics outsourcing
3PL is the most widespread outsourcing model: a company hands over all or part of its logistics, storage, transport, order picking, sometimes co-packing, to a specialized provider that owns its own warehouses, fleet or carrier networks. The shipper keeps strategic control (choice of providers, expected service levels) but delegates operational execution. Most large logistics providers operate as 3PLs.
4PL sits one level up: it does not necessarily carry out the physical operations itself, but orchestrates the whole chain on behalf of the shipper, managing several 3PLs and carriers at once, often through a central TMS and unified reporting. This is known as an "asset-light" model: the 4PL primarily sells integration and management capability, with a single point of contact for the shipper, rather than owning physical assets. This model is favored by companies managing complex, multi-provider, multi-country supply chains that want to simplify their oversight.
The numbering continues beyond that: a 1PL is a company that transports its own goods, a 2PL a simple carrier performing a one-off service. The move from 3PL to 4PL mainly marks a shift in posture, from execution to orchestration of the supply chain.
FAQ
What is the difference between 3PL and 4PL?
A 3PL performs logistics operations itself (transport, storage) with its own resources, on behalf of a shipper. A 4PL manages and coordinates the whole chain, including several 3PLs, generally without owning its own warehouses or fleet: it sells orchestration capability rather than physical execution.
Can a company be both a 3PL and a 4PL?
Yes, some large providers offer both models depending on the client: direct execution (3PL) with their own warehouses and fleet for certain flows, and global multi-provider orchestration (4PL) for more complex supply chains that need a single point of contact and coordination across several subcontractors.
Related terms
Freight forwarder / customs broker · Chartering · TMS · Transport plan · Intralogistics · WMS.
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