Joomla is a powerful and flexible Content Management System (CMS) that allows users to create and manage websites with ease. It is open-source, meaning that anyone can use, modify, and distribute it freely, making it a popular choice for both beginners and experienced developers alike. With a wide range of templates and extensions, Joomla enables users to build everything from simple blogs to complex corporate websites. Its user-friendly interface and strong community support make it an ideal platform for those looking to establish a robust online presence.