What do Beyoncé, The Rolling Stones, the White House, LinkedIn, Sweden’s official website, NASA, the NFL and the WNBA have in common? You guessed it–their sites all run on WordPress.

WordPress is used to manage content on sites both large and small. Why? Because WordPress is a content management system (CMS). It provides an easy-to-use dashboard from which you’ll be able to add, format, and post content like blog entries, event notifications, and photos to your site.

Without a CMS, all of these changes would need to be made directly in code, meaning you’d have to keep a developer on retainer, or update the code yourself. At a minimum, you’d need to be comfortable writing, refactoring and debugging HTML, CSS, and Markdown. By contrast, WordPress allows you to change images, post blogs, and update site content using a Microsoft Word-style interface instead.

Here are some other notable companies using WordPress for all or part of their sites: