[presentation]

One huge point of RSC is that you can use your super heavyweight library in the backend, and then not send a single byte of it to the frontend, you just send its output. It's a huge win in the name of shaving way more than ms from your page.

One example a programmer might understand - rather than needing to send the grammar and code of a syntax highlighter to the frontend to render formatted code samples, you can keep that on the backend, and just send the resulting HTML/CSS to the frontend, by making sure that you use your syntax highlighter in a server component instead of a client component. All in the same language and idioms that you would be using in the frontend, with almost 0 boilerplate.

And if for some reason you decide you want to ship that to the frontend, maybe because you want a user to be able to syntax highlight code they type into the browser, just make that component be a client component instead of a server component, et voila, you've achieved it with almost no code changes.

Imagine what work that would take if your syntax highlighter was written in Go instead of JS.