Domain.com/blog

If your primary site is hosted elsewhere but you’d like the blog to live in Webstudio, point a sub-domain such as blog.domain.com to Webstudio and it will work seamlessly.

When the entire site is in Webstudio, simply create a folder named blog and build your posts there—Webstudio can even pull in dynamic entries from a headless CMS.

What Webstudio can’t do (at least for what I know) is serve only domain.com/blog while the root domain.com remains on a different host.

you could do that if you have your own url rules on your hosting, so you can render

whatever.wstd.io when user visits domain.com/blog

this can be easily done on cloudflare using their rules

but using subdomain is easier