DevOps Glossary

Linux is an open source, Unix-like kernel that sits between applications and hardware and serves as the core of many complete operating systems called distributions. It addresses the need for a stable, configurable platform by handling process scheduling, memory management, device drivers, filesystems, and networking, exposing consistent system calls that user-space tools and services rely on to run reliably across servers, desktops, and embedded devices. With Linux, teams can standardize builds, automate configuration, and tune performance and security to specific workloads such as web services, containers, and data pipelines, while without it you are often limited by proprietary operating system constraints, licensing friction, and reduced visibility into how the system behaves under load. This gap exists because Linux is modular and auditable, enabling broad hardware support and rapid iteration through a large maintainer and distribution ecosystem.