The (Application System/400), introduced in 1988, is a renowned family of midrange computers designed for business applications. While the original hardware is no longer in production, its core architecture lives on in today’s IBM Power Systems running the IBM i operating system. Evolution and Rebranding
: This layer separates applications from the underlying hardware, allowing companies to upgrade to new processors (like Power10) without modifying their software. The (Application System/400), introduced in 1988, is a
: Unlike other servers, the Db2 for i relational database is built directly into the operating system. The (Application System/400)
: Hardware consolidated into IBM Power Systems , with the operating system becoming IBM i . Core Architectural Features introduced in 1988