A management information system (MIS) is a series of processes that collects, analyzes, and displays data to aid decision making at all levels of management. It has several components, including people, procedures, data, hardware, and software. The primary goal of MIS is to organize data from across a business, summarize it, and facilitate improved decision making and productivity. MIS supports management functions like planning, organizing, controlling operations, and decision making by providing accurate and timely information.