Operating System
IBM i Knowledge Base
IBM i is the operating system that runs on IBM Power Systems. This section covers how it works, how it's licensed, its roadmap, and what IBM i support looks like today.
IBM i (formerly OS/400, then i5/OS) is one of the most resilient operating systems in enterprise computing. This section explains what IBM i is, how it differs from AS400 as a term, and what the current IBM i roadmap means for your organization.
Topics Covered
- What is IBM i?
- IBM i operating system explained
- IBM i security basics
- IBM i licensing explained
- IBM i roadmap
- IBM i support status
- IBM i modernization options
- IBM i release history