This document discusses services in the modern economy. It begins by providing examples of common services individuals use daily, such as turning on lights or getting a haircut. It then notes that many institutions, like colleges, offer a complex array of services beyond their core function, including libraries, cafeterias, and bookstores. The document outlines some of the key differences between marketing services versus physical goods, such as the intangible nature of services and greater customer involvement in the production process. It also discusses the large and growing role of the service sector in modern economies.