What is 3p and 4p in logistics?

Understanding 3PL and 4PL in Logistics

A 3PL, or third-party logistics provider, is responsible for handling all fulfillment activities, including warehousing and shipping. On the other hand, a 4PL, or fourth-party logistics provider, oversees a 3PL's operations on behalf of the customer while also managing other elements of the supply chain.