This document discusses the role of customers in service delivery. It states that service delivery is customer-driven rather than product-driven. Customers play a vital role in successful delivery as they are often present during service and can influence whether the service meets their specifications. The level of customer participation varies, from low involvement like airline travel to high involvement like marriage counseling where they co-create the service. Strategies for enhancing participation include defining customer jobs, educating and rewarding customers, and managing customer mix to promote compatibility.