Operations management involves product selection and design, process selection and planning, location of facilities, layout and material handling, and capacity planning. It helps companies select the right products and designs to be competitive, optimize outputs from processes, select locations that minimize costs, arrange layouts for smooth production flow, and plan appropriate capacities using tools like marginal costing and linear programming. It also aids in making short term operational decisions around production planning, control, inventory control, quality control, and cost reduction. There are different types of production systems like mass, batch, job shop and project production.