Third-party logistics (3PL) involves outsourcing elements of distribution, warehousing, and fulfillment services to specialized third-party businesses. 3PL providers offer integrated operations and customized solutions to meet customer demands. As of 2014, 80% of Fortune 500 companies used some form of 3PL services. There are four main types of 3PL providers: standard, service developer, customer adapter, and customer developer - with customer developers integrating fully with clients. Outsourcing to 3PL provides benefits like reduced costs and capital requirements, as well as allowing companies to focus on their core business. However, it also means losing some control and ensuring IT integration with providers.