Server Side Rendered (SSR) Websites
Server Site Rendered (SSR) websites are websites where the HTML is rendered on the server when a page is requested. This style of website is used when there is dynamic content for the page and generally has some type of database backing the content.
In this model, the browser makes a request, the server handles the request, looks up any needed data from the database, and then renders the HTML and sends it back to the browser.
There are two new components from a Static website. The database and an application. The database holds the dynamic data and the application is what talks to the database and renders the HTML.
This is the model WordPress uses, for example.
I think this is the way most web applications should be built, but more on that in another post. ;)