If remote management is used for servers, it's normally IPMI with a completely separate baseboard controller that has its own NIC connected to a physically sepa

If remote management is used for servers, it's normally IPMI with a completely separate baseboard controller that has its own NIC connected to a physically separate network [although some boards cheap out on that, notably older INTEL boards, where the separate NIC is an option you have to buy]. No mainstream (2-way) server has AMT, anyway.