From Joomla Website Joomla! is a free and open-source content management system (CMS) for publishing web content. Before we go on, let us clarify what a Content Management System (CMS). Again Joomla Website does the definition pretty clearly. A CMS is a web-based application, that provides capabilities for multiple users with different permission levels to manage (all or a section of) content, data or information of a website project, or intranet application. Managing content is basically creating, editing, archiving, publishing, collaborating on, reporting, distributing website content, data and information.
We hope all of us are in the same page now and we can continue without confusion about what Joomla is all about. You can use Joomla for the following use-cases