Vercel
A hosting service that takes your code and publishes your website to a fast, global address.
Like a print shop that takes your design and posts it on boards across the city. Vercel takes your website code and publishes it to servers around the world.
We use it to host the Astro marketing site, so every change in GitHub becomes a preview you can click and review. A preview for a pull request is a test site for a proposed change.
Connect your GitHub repo, add environment variables, which are secret or configuration values the server gives your site, and push. Vercel builds the site, gives you a preview URL, then deploys to your domain when you merge. A domain is your web address.