This chapter discusses the term “service delivery” and describes a service delivery system in the context of a nonprofit organization. Servitization is the process whereby an organization develops creative and innovative ways to create a product-service system that integrates value-based products and service offerings. The chapter discusses the roles of client-centeredness, decision making, scheduling, priority setting, effective and efficient flow of services or activities, quality assurance, and continuing quality improvement, and how these factors contribute in their own context to influence positively or negatively the financial sustainability of a nonprofit organization. A customer-centric service design is a service delivery system that focuses on providing the best quality service possible to customers or clients or the service target, based on a service concept, a service decision path, service sustainability, and service quality. The chapter explains the relationship between service delivery and financial sustainability.