This chapter introduces operations management as the design, operation, and improvement of systems that create and deliver a firm's primary products and services. It defines key terms like production system, core services, value-added services, and operations management. The chapter also provides an overview of the historical development of operations management and current issues in the field. It concludes by outlining the plan for the rest of the book, which will cover topics like operations strategy, product and process design, supply chain management, and planning and control.