Joomla is an incredibly powerful and versatile Content Management System (CMS). Most of us think of Joomla when it comes to build complex websites, directories, and e-commerce stores. But these applications are more in the Content Management world. What happens when we need to develop a different type of web application? In those cases, it's common to use custom development and build our projects from scratch.
Read more https://magazine.joomla.org/all-issues/march-2023/developing-custom-projects-with-joomla