For awareness, if you want to build a SSG/SSR frontend, there's also [Astro](https://astro.build/)
It lets you ship client islands to the client, which AFAIK is essentially partial hydration.
It lets you ship client islands to the client, which AFAIK is essentially partial hydration.
Katie Sylor-Miller named them when she was at Etsy and from memory they were React components in a PHP page to start