IBM iSeries is a family of midrange computer systems designed for business applications. Originally known as AS/400, it combines hardware and software to provide a reliable platform for running enterprise resource planning (ERP) and other critical applications. The system is known for its robustness, security, and ease of use, making it popular among small to medium-sized businesses. The iSeries operates on the IBM i operating system, which supports various programming languages and databases. It features integrated tools for managing data and applications, allowing organizations to streamline their operations and improve efficiency. The system is also known for its backward compatibility, enabling users to run older applications seamlessly.