Server-Side Rendering (SSR)
Server-side rendering (SSR) means that the HTML of a web page is generated entirely on the server and sent to the browser ready to display, in contrast to client-side rendering, where the browser first has to execute JavaScript to build the visible content.
In practice
SSR — like the classic server-rendered websites that most traditional CMS platforms deliver — tends to be faster on first render and easier for search engines and AI crawlers to read directly than JavaScript-heavy single-page applications. For extensive interactive web applications SSR is therefore often the better choice than pure client-side rendering.