just wanted to give you another perspective to consider: I teach a class where they're designing websites and small apps with ChatGPT, but we're failing to host this. I built a simply copy/paste HTML renderer, so they can at least share and try it outside of ChatGPT, but for our final project, I felt like it would've been nice if something like all those JS playgrounds would exist, but much, much simpler. I upload an HTML and it becomes accessible publicly so students can share their projects. The domain never matters, any subdomain is fine, but it needs to be without an account and that makes it incredibly hard to host (spam). Why without an account? Our onboarding of the same class (30 students or so) to Figma took us two full days, it was a disaster. Nobody wants to go through that again. That said, university budgets are nearly untouchable, so I'm not sure if and/or where there's reason enough to do this other than purely academical.