
CentOS (Community ENTerprise Operating System) is a free and open-source Linux distribution that aims to provide a functionally compatible alternative to Red Hat Enterprise Linux (RHEL). It is widely used in servers, development environments, and enterprise systems for its stability and long-term support.
Founded: 2006 by Gregory Kurtzer and a small group of developers.
Goal: Offer a free, community-driven rebuild of RHEL sources.
Quickly gained traction as a preferred server OS due to its enterprise-grade stability without the RHEL subscription cost.
Initial Funding: Community-driven, volunteer-based.
In 2014, Red Hat (now part of IBM) acquired the CentOS project, not to monetize it, but to bring it under its umbrella to improve collaboration and alignment.
Red Hat did not directly commercialize CentOS but used it as a complementary community project to RHEL.
CentOS Linux (2004–2021): A downstream, binary-compatible rebuild of RHEL.
CentOS Stream (2021–present): A rolling-release distribution, positioned between Fedora and RHEL (upstream of RHEL).
Key Features:
RHEL compatibility
Long-term support (CentOS 7 supported until 2024)
SELinux for security
Systemd-based boot and service management
YUM/DNF package management
Acquired by Red Hat in 2014: This was not a business acquisition in the traditional sense but rather an integration into the Red Hat family.
Transition to CentOS Stream in 2021: Marked a shift in purpose—from stable production clone to RHEL preview platform.
Rolling updates that preview what's coming in RHEL.
Faster access to newer packages compared to traditional CentOS.
Closer collaboration with Red Hat engineering.
As a community-driven project, CentOS emphasized:
Transparency in development
Collaboration with users and developers
Freedom and openness through open-source licensing (primarily GPL)
Primary Users:
System administrators
Web hosting providers
Enterprises and small businesses
Developers needing RHEL-like environments
Community Resources:
Forums, mailing lists, IRC, and documentation at centos.org

CentOS Linux
By The CentOS Project