iSeries
An older IBM server brand in the AS/400 family history, often used casually to mean a modern IBM i environment.
iSeries was an IBM hardware brand before the System i and IBM Power naming eras. Modern environments are usually IBM Power servers running IBM i, though many teams still say AS/400 or iSeries because the applications, skills, and business systems carried forward across the name changes.
Related Terms
IBM i
IBM's integrated operating system for IBM Power servers, descended from OS/400 and commonly still called AS/400 by long-time users.
IBM Power
IBM's current enterprise server family for IBM i, AIX, Linux, and hybrid workloads, built around the Power processor architecture.
Power ISA
The reduced instruction set computer (RISC) architecture underlying every IBM Power processor generation, developed under OpenPOWER Foundation governance.