It's because most of it is marketing speak. I suppose they don't want to call it a better GitHub pages with awesome UX, but rather invent a new category term. I

It's because most of it is marketing speak. I suppose they don't want to call it a better GitHub pages with awesome UX, but rather invent a new category term. In the tech sector if it sticks then it's pure gold. I've set up a landing page recently and it was flawless on Netlify. You provide a Git repo, connect it to their CI then give some build commands and they will handle the rest. They still host it on regular servers obviously, but you don't have to do anything to manage it. They have a DNS server which is also pretty neat.