Ubuntu (stylized as ubuntu) is a free and open-source operating system and Linux distribution based on Debian. Ubuntu is offered in three official editions: Ubuntu Desktop for personal computers, Ubuntu Server for servers and the cloud, and Ubuntu Core for Internet of things devices and robots. New releases of Ubuntu occur every six months, while long-term support (LTS) releases occur every two years.Ubuntu is produced by Canonical and the community in a meritocratic governance model. Canonical provides free guaranteed security updates and support for each Ubuntu release, starting from the release date and until the release reaches its predesignated end-of-life (EOL) date. Canonical generates revenue through the sale of premium services related to Ubuntu.Ubuntu is named after the Southern African philosophy of ubuntu (literally, 'human-ness'), which Canonical suggests can be loosely translated as "humanity to others" or "I am what I am because of who we all are".Ubuntu is the most popular operating system for the cloud, and is the reference operating system for OpenStack.