Management Information System (MIS) collects, processes, stores, and analyzes data from internal and external sources to provide information to support decision making across all levels of management. It ensures the right information is delivered to the right people at the right time. MIS components include management, information, and systems. It provides standard reports and allows custom report development. Key types of MIS are transaction processing, decision support, executive support, and customer relationship management systems. The role of MIS is to supply accurate and timely information to support planning, control, problem identification, and decision making for all management functions.