WordPress is a free and open-source content management system built on PHP and MySQL. It is a popular platform for creating websites, blogs, and online stores. With WordPress, users can easily create, edit, and manage their website’s content and design using a user-friendly interface, without needing to know advanced coding. Additionally, users can customize their website’s appearance with themes and extend its functionality with plugins. WordPress is used by millions of websites around the world, making it one of the most popular content management systems available.