Dynamic websites are web pages that can change their content and layout based on user interactions or other factors. Unlike static websites, which display the same information to every visitor, dynamic websites use server-side technologies like PHP, JavaScript, or ASP.NET to generate content on-the-fly. This allows for personalized experiences, such as user accounts, shopping carts, and real-time updates. These websites often rely on databases to store and retrieve information, making them more flexible and interactive. For example, social media platforms like Facebook and e-commerce sites like Amazon utilize dynamic web pages to provide tailored content and features, enhancing user engagement and satisfaction.