It's always fun to watch developers discover Netlify for the first time. It's so easy. One way to do it is to just literally drag and drop a folder onto them and it will be online. Even better, connect a Git repo to a Netlify site and tell it what branch you want to watch, then any commits to that branch will automatically go live, even running your site's build as it does it. I heard one developer say, "It's like someone actually designed hosting and deployment."
That lends itself nicely to static sites, but don't think that static sites are only for certain types of sites or limiting in some way. That's what the JAMstack is all about! Wanna learn more about that? Come to JAMstack_conf!
Netlify does a ton to help you power your JAMstack site as well. They'll process your forms. They'll help you with authentication. They'll do your A/B testing. They'll even run your cloud functions. Pretty incredible, really.