Firefox Extended Support Release (ESR) is an official version of Firefox developed for large organizations like universities and businesses that need to set up and maintain Firefox on a large scale. It is designed to provide a stable and secure browsing experience, with the latest security and stability fixes, but without the latest features. Firefox ESR is based on the regular release cycle of Firefox for desktop, and ESR releases are maintained for more than a year, with point releases that coincide with regular Firefox releases.

Firefox ESR is recommended for organizations that need extended support for mass deployments, while the regular Firefox release is recommended for home users who want the latest features. Firefox ESR receives all security updates at the same time they are released for the regular Firefox Desktop edition.

Firefox ESR can be downloaded from the Firefox ESR download page, and it is available for different operating systems and languages. Firefox ESR can be deployed using install packages and a wide expansion of group policies and features, making deployment faster and more flexible than ever.

In summary, Firefox ESR is a version of Firefox designed for large organizations that need a stable and secure browsing experience, with the latest security and stability fixes, but without the latest features. It is based on the regular release cycle of Firefox for desktop, and ESR releases are maintained for more than a year, with point releases that coincide with regular Firefox releases. Firefox ESR can be downloaded from the Firefox ESR download page, and it can be deployed using install packages and a wide expansion of group policies and features.