Coupled with a headless CMS (GraphQL is nice but not mandatory), this makes React a dream to work with, the pages super fast, the routing super simple, and the dev ex super fun.
One push to Vercel and you have a fully functional website, no AWS, Docker, Kubernetes, DNS, HTTPS, etc. to configure. It really is magic.
Sadly, the IntelliJ support for them was very weak (they worked, sort of, but project configurations etc. weren't copied over... it was essentially treated as a different project altogether).
I'm still not 100% sure how it's better than just checking out the same repo in different folders to begin with. But then again most of Git is totally confusing, lol.