You dont need a static IP. Your npub serves as the identification, you can host production backends from your phone. No one can ban your service.

This sounds amazing! So you probably also don't need a dns server. That means a parallel internet without censorship. What about domain names? How will that be different on Nostr?

You don't need domain names just the backends pubkey

So, as a use case literally every business has: Could the back end of a contact form be hosted on nostr from a statically hosted site such as cloudflare pages, ect...? (I know we have formstr but in practice it's the same as a Google form regardless of what's "under the hood")

Yes, and it makes formstr even more powerful cause you can connect formstr to a locally hosted backend and it works on production