Red Hat shipped its original Red Hat Linux from 1994. In 2002 it released Red Hat Enterprise Linux, a slower-moving, certified and subscription-supported product, and in 2003 it ended the free Red Hat Linux in favour of the community-run Fedora. RHEL quickly became the standard Linux for banks, governments and hardware vendors, helped by long life cycles and certifications from software vendors.
Each major version is supported for ten years, with paid add-ons beyond that. Development flows from Fedora into CentOS Stream and then into RHEL. IBM bought Red Hat in 2019. Red Hat’s 2020 decision to end CentOS Linux, and its 2023 decision to publish RHEL sources only through CentOS Stream, led to community rebuilds such as Rocky Linux and AlmaLinux.
