This document discusses service marketing and defines key terms. It notes that the service sector consists of service industries and self-employed professionals that provide services like water, gas, electricity, transportation and more. The American Marketing Association defines a service as activities, benefits or satisfaction offered for sale or in connection with goods. The document outlines features of service marketing such as perishability, intangibility, inseparability from production and customers, heterogeneity, changing demand, and lack of ownership. It also lists strategies for service firms like developing customer relationships, using the internet, and holistically marketing services.