Information systems are organized systems for collecting, storing, and processing data. They help businesses and organizations manage information efficiently, enabling better decision-making and improved operations. These systems can include hardware, software, data, procedures, and people working together to support various functions. Common types of information systems include transaction processing systems, management information systems, and decision support systems. Each type serves a specific purpose, such as handling daily transactions, providing reports for managers, or assisting in complex decision-making. Overall, information systems play a crucial role in modern society by facilitating communication and information flow.