Ubuntu is a popular, free Operating System built upon the Linux Kernel. Developed by Canonical, it is known for its user-friendly experience, primarily featuring the GNOME Desktop Environment in its main edition. Ubuntu aims to make open-source computing accessible to millions worldwide, providing regular updates and Long Term Support (LTS) releases every two years, ensuring stability for enterprises and users. While the main edition uses GNOME, official derivatives, often called 'flavors', offer alternative Desktop Environments like KDE Plasma (Kubuntu), Xfce (Xubuntu), and LXQt (Lubuntu). It utilizes the APT Package Manager for software installation and management. Beyond the desktop, Ubuntu is widely used in Server environments, for Cloud Computing, and on IoT devices due to its stability and robust community support.