iOS Devices without maps? What website?

[ArtOfWarfare]

I came across this in the apple docs on embedding links to the maps app:

iOS Note: If the Maps app is not installed on the device, opening a map URL forwards the request to the Apple Maps website.

Which devices don't have maps? The iPhone has always had maps, I'm pretty sure the iPad always had maps, and I know the current iPod touch has maps but I don't know how many generations back it has had them.

Second question: what apple maps website?