Hybrid Rendering is a technique popularized by Astro which lets you choose between two rendering methods on a page-by-page basis. The two options are SSG (Static Site Generation) and SSR (Server-Side Generation). SSG is great for content or information sites. You generate all the pages ahead of time and serve them from a global CDN. This offer speed and better security. Generally, every visitor will see the same content, so SSG is not great for apps where the user logs in and sees a curated feed. SSR is great in this case though. With SSR, the pages are generated just in time, so it is easy to customize them for each visitor. You can use Hybrid rendering even if you want all your pages to be statically generated (or prerendered) but also want to have interactive forms on the site. Interactive forms (a comment form, for example) require a server to process the entered data. Hybrid rendering can help here. You keep all pages static to gain the speed and security benefits, but have a server-based form handler to sanitize, form inputs and add them to your database.