WordPress is an open-source content management system that allows users to modify its features and functionalities. Originally built as blogging software, WordPress has been adapted as a website builder as well. WordPress installations are easy to complete within five minutes. It runs on databases and requires knowledge of creating and using databases to work with content like posts and pages. There are two methods for installing WordPress - using wordpress.com for hosting or installing it on your own server. WordPress offers themes and templates for website design without coding experience needed. It can also be used for e-commerce and various other website applications and industries.