Joomla Website Development is the comprehensive process of building, customizing, and managing websites using the powerful and flexible Joomla open-source Content Management System (CMS). This specialized area of web development involves installing and configuring the Joomla platform, designing the user interface through templates (using HTML, CSS, and PHP), and extending core functionality by integrating or creating custom components, modules, and plugins. Developers leverage Joomla's robust framework to efficiently structure content, manage user permissions, and implement complex features, enabling the creation of everything from simple blogs and corporate portals to sophisticated e-commerce and community-driven sites.