@destroy arm is the computer architecture used in smartphones, modern macs and the nintendo switch. arm laptops other than macs r mostly rlly shitty bc of some historical shenanigans w/ microsoft and arm chip manufacturers but the architecture is cool bc it's easier to program at the bare metal level and consumes less power for the same amt of computational work.
SoC stands for "system on a chip" and means that like microprocessors took all the parts of an old CPU from being separate chips to just 1 component, now the CPU, GPU, memory controllers (and sometimes the memory itself in lower end SoC designs), etc. are all packed into just one chip. all arm devices i know of including the new macs are SoC designs