This document provides an introduction to service design. It discusses how service design emerged from product design and interaction design to become a more user-centric practice. It defines what constitutes a service, including the interactions, actions, and objects that make up the touchpoints through which customers interact with the service. The document outlines the key steps in designing services, including designing the experience, mapping customer activities, and defining interactions. It also discusses how service design requires collaboration across different departments and takes a holistic approach with the customer at the center.