The "i Series" refers to a line of products developed by IBM, primarily known for their midrange computer systems. Originally launched as the AS/400 in 1988, the i Series has evolved to support various business applications, offering robust performance and reliability for enterprises. The i Series systems run on the IBM i operating system, which integrates database, middleware, and application services. This platform is designed for ease of use and management, making it suitable for businesses of all sizes looking to streamline their IT operations and enhance productivity.