Infrastructure · Operating Systems
Operating Systems
The software layer that manages hardware resources, isolates processes and presents services to applications.
FoundationalUpdated 2026-09-01
Overview
An operating system schedules CPU time, manages virtual memory, mediates access to storage and devices, and enforces the security boundary between processes and users. Understanding these mechanisms explains most performance and security behaviour above them.
In enterprise practice the important attributes are support lifecycle, patch cadence, management tooling, hardening capability and application compatibility.