WordPress is an open source website creation tool developed in PHP. For the non-programming audience , we can say that it is the EASIEST & MOST POWERFUL WEB APPLICATION DEVELOPMENT tool.
It can be used to create any kind of website, right from a basic informative site, a blog upto a fully dynamic e-Commerce application or a corporate website. It might not be the only C.M.S used, but certainly is an unquestionable leader in the competition.
WordPress primarily started as a blogging platform. But, with time it is evolved into a powerful website building tool. the main reason for using WordPress could be its flexibility to create each and every kind of website. According to W3Techs, WordPress powers 35% of all the websites on the internet, which is a HUGE SHARE.