4PL operators provide a complete business process outsourcing solution to their clients. Information technology plays an important role in 4PL operations, comprising elements of people, process and technology. In 3PL operations, clients themselves kept a track of incoming inventories by continuously following up with all the supplies as well as following up with the 3PL operator. Communication and transportation of documents through conventional e-mails and fax messages were also proving to be tedious and time consuming.

4PL has emerged on an important area based on business process reengineering and technology with a human interface provided in terms of strategically placed personnel to have a seamless integration of process, people and technology. The focus is to manage supplies from diverse locations and to support the client by providing complete solutions rather than giving piece meal alternatives to the problems. Due to 4PL arrangements, the retail chain now has a complete visibility of its supply chain. It has to co-ordinate only with one agency, that is, the 4PL operator for all its logistics needs.