Software that updates itself without you having to manually install new versions. Like having a car that automatically gets the latest safety features overnight.
Your smartphone apps receive automatic updates to fix bugs and add new features without you needing to do anything.
These services help automatically apply operating system and software patches across fleets of servers/VMs. They differ by platform integration (AWS SSM, Azure Arc, GCP OS Config agents) but all support scheduling, compliance reporting, and controlled rollouts.