These WordPress tutorials are for WordPress, which is a free and open-source content management system (CMS). To function, WordPress has to be installed on a web server, which would either be part of an Internet hosting service or a network host in its own right. An example of the first scenario may be a service like WordPress.com, and the second case could be a computer running the software package WordPress.org.A local computer may be used for single-user testing and learning purposes. Features include a plugin architecture and a template system. WordPress is used by 30.6% of the top 10 million websites as of April 2018. As such, WordPress is the most popular website management or blogging system in use on the Web, supporting more than 60 million websites.