When you say " 'x provider' will automatically detect that you are using nitro, what do you mean?

[Gonzalo-Bruna]

I've been trying to deploy the most basic server that you could image to different providers. Vercel, Netlify, Cloudflare Pages, but after reading the documentation a few times, I was never able to understand how to upload my server to any of those. I have been really confused the whole time.

First of all, when trying to deploy to any of them, none of them would auto-detect that I was using nitro, and therefore, after deployment, the server wouldn't work.

Secondly, I was never able to understand what the presets meant. I didn't know when I had to use them either, it just seems too confusing.

I tried for example with netlify but it wouldn't detect any functions at all. Am I doing something wrong?
I also tried using vercel and it detected just one function called "nitro", is that the expected behavior? shouldn't there be as many functions as routes I have?