Third-party logistics (3PL) involves outsourcing elements of logistics operations like transportation, warehousing, and distribution to an external provider. Companies utilize 3PL to reduce costs, improve efficiencies, and expand capabilities beyond their internal abilities. 3PL services are flexible and scalable based on a company's needs. Common reasons for using 3PL include lacking sufficient warehouse space or facing rising transportation costs. When evaluating 3PL providers, companies should consider capabilities like warehousing, transportation, distribution, and shipping/receiving. Larger, more established 3PL firms can offer integrated, end-to-end logistics execution.