WordPress is a free and open-source content management system (CMS) based on PHP and MySQL. Features include a plugin architecture and a template system. WordPress was used by more than 23.3% of the top 10 million websites as of January 2015. WordPress is the most popular blogging system in use on the Web at more than 60 million websites.
WordPress is a powerful content management system which is one of the reasons many sites are built on this platform. We can heavily customize the usability of a WordPress site with the right plugins, tweaks, functions, snippets, shortcodes and themes, all covered in this section.