
Static-site hosting: upload HTML, CSS, JS and get a live URL.

900.cool is a static-site host. You upload HTML, CSS, and JavaScript files and get a live URL back, with optional custom domains. It is aimed at the kind of sites that do not need a server: landing pages, portfolios, documentation, small business sites, and prototypes.
If your site needs a database, authentication, or server-side rendering, this is not the right tool. For everything that compiles down to static files, it removes the deployment step.