GitHub Pages or Netlify for sure. With either of these options, your static site can be set up to deploy whenever there's new commits to the specified branch. Me and a friend mentor for Code Louisville, and we're able to get the beginner frontend students up and running very quickly using these options - they're free and much easier to use.
I see the "GitHub Pages" suggested a lot whenever this question comes up, but it's worth noting that it's against their ToS[0] to use it for commercial purposes: "GitHub Pages is not intended for or allowed to be used as a free web hosting service to run your online business, e-commerce site, or any other website that is primarily directed at either facilitating commercial transactions or providing commercial softwar…
I'm not sure why they're doing it this way, it should be a nominal task to restrict viewers to those with read access to your repo, but I think it underscores the use cases they have in mind here. They want you to use it as a blog and not as a serious web hosting solution.