WordPress is the most popular content management system in the world and is used to create around 25% of the total number of websites published online today. The main reason WordPress is popular is the vast open source community of development that occurs on the platform making thousands of free themes, plugins, and extensions available to extend functionality. Small businesses and independent web publishers can use WordPress to disrupt markets with ecommerce or sales & marketing campaigns.
WordPress has a variety of distributions available of which BuddyPress is the most popular for social networking. Managed WordPress hosting plans have become extremely popular by providing faster pageload speeds through better caching and running WordPress with Nginx, Varnish Cache, PHP 7, HHVM, Memcached, etc. on cloud platforms. Many web hosting companies are active contributors to the WordPress code base and have inside knowledge on best practices for the CMS.
WordPress Hosting Guide