WordPress is marketed as a platform for building dynamic website solutions. Dynamic simply means that data is live on the website while users are interacting on the site. So a website owner can add content (pages, post, images) live without affecting existing viewers. Content is stored in a database, which allows for the dynamic feel of a WordPress site. In short, a website can start off as a single page and grow over time to have multiple pages and many post without becoming overwhelming. The best example is any news site like CNN.