WordPress is an open source content management system (CMS) powered by PHP and MySQL that is used to build blogs and websites. There are currently over 55 million WordPress sites worldwide. WordPress allows high levels of customization through themes and over 21,000 plugins. Key performance indicators show that over 341 million people view more than 2.5 billion WordPress pages per month. WordPress manages over 22% of new websites and is used by many large businesses like CNN, The New York Times, and eBay to power their sites.