This document discusses key concepts in service operations management. It begins by outlining the inputs, transformation process, and outputs of an operations management system. It then defines a service as the product of interaction between a provider and client to relieve or resolve a problem. Key characteristics of services are discussed, including their intangible nature, inseparability from customers, variability, and perishability. The consequences of these characteristics for service management are then examined, such as the difficulty of controlling service delivery and synchronizing supply and demand.