 In national economic statistics, the service sector is often defined as whatever is not agriculture or manufacturing (service sector – tertiary sector of the economy (Colin Clark)).Intuitively, services are processes, performances, or experiences that one person or organization does for the benefit of another – such as custom tailoring a suit, cooking a dinner to order, driving a limousine, mounting a legal defense, setting a broken bone, teaching a class, or running a business's information technology infrastructure and applications.In all cases, service involves deployment of knowledge, skills, and competences that one person or organization has for the benefit of another (Lusch & Vargo), often done as a single, customized job.