Ubuntu is a widely used open-source Linux distribution developed by Canonical Ltd. It comes in desktop and server versions, with Long-Term Support (LTS) releases providing stability and security updates for five years. Ubuntu features the Debian package management system (APT) for easy software installation. The desktop environment has transitioned from Unity to GNOME. With an active community and official flavors for different desktop environments, Ubuntu caters to a diverse user base. It is employed in cloud computing, and Ubuntu Core serves the Internet of Things (IoT). Snap packages simplify software distribution, contributing to Ubuntu’s reputation for ease of use, stability, and strong community support.