WordPress development refers to the process of creating, customizing, and maintaining websites using the WordPress content management system (CMS). WordPress is an open-source platform widely known for its user-friendly interface and flexibility. Developers use a combination of PHP, HTML, CSS, and JavaScript to design and enhance the functionality of WordPress websites. The development process involves theme creation, where the visual appearance of the site is crafted, and plugin development to add specific features and functionalities. WordPress also supports a vast ecosystem of third-party plugins and themes, allowing developers to extend and customize websites efficiently.