There are multiple IoT offerings: - Windows 10 IoT Enterprise, which is
a full Windows 10 (desktop) OS. - Windows 10 IoT Mobile, which is a full
mobile (phone) OS. - Windows 10 IoT Core, which is the really small OS
designed to run on lower-end devices. All of these OSes are all based on
the same "OneCore" base, so they definitely share components. Nano
Server is also built on top of that same "OneCore" base. There are
definitely similarities between Nano and IoT Core.