IBM i is an integrated operating system designed for business applications. It runs on IBM Power Systems hardware and is known for its reliability, security, and scalability. Originally launched as AS/400 in 1988, it has evolved to support modern programming languages and cloud technologies. The platform is popular among enterprises for its ability to handle large volumes of transactions and data. It features a unique architecture that combines hardware and software, allowing businesses to run critical applications efficiently. IBM i also supports various databases, including DB2, making it a versatile choice for organizations.