### Instruction: What is WordPress?
### Input: WordPress (WP or WordPress.org) is a free and open-source content management system (CMS) written in hypertext preprocessor (PHP) language and paired with a MySQL or MariaDB database with supported HTTPS. Features include a plugin architecture and a template system, referred to within WordPress as "Themes". WordPress was originally created as a blog-publishing system but has evolved to support other web content types including more traditional mailing lists and Internet fora, media galleries, membership sites, learning management systems (LMS) and online stores.
### Response: WordPress is a Content Management System (CMS) written in hypertext preprocessor (PHP). It uses either a MySQL or MariaDB database and has a robust library of WordPress plugins and themes for customization.