Status: OUT
RHEL 9 manages the complete temporal system lifecycle: automated provisioning (Image Builder blueprints, Kickstart, Anaconda) for initial deployment, structured patch management (BaseOS/AppStream content split, DNF security update filtering, advisory-driven remediation) for day-2 operations, and dual upgrade paradigms (Leapp sequential in-place upgrades, bootc image-based atomic updates) for major version transitions.