At first glance, this seems like a ho-hum topic- just use whatever Arm or RISC-V solution you need - but think again. We’re now expecting to push an awful lot of functionality into these edge devices. Our imaginations don’t care about power, performance and cost; everything should be possible so let’s keep adding cool features. Of course reality has to intrude at some point; edge nodes often aren’t plugged into a wall socket or even into a mobile-phone-class battery. Power and recharge constraints (as well as cost) don’t necessarily mean our imagined products are unattainable but they do require more careful thought in how they might be architected.