What is the difference between IoT and IIoT?

IoT, the internet of things, connects everyday devices to the internet: your smart speaker, your doorbell, your fridge. IIoT, the industrial internet of things, does the same for machines in factories, ports, power plants, and farms, where a missed signal costs millions. Both run on sensors that see, measure, and report every minute. IIoT is the nervous system of supply chain 4.0. Think Amazon: more than 1 million robots in its warehouses in 2025, machines talking to machines, robots speaking to robots, every package tracked from the shelf to your door. Automated, data-driven, and awake 24/7. My 2-step plan for every factory boss: connect your machines with IIoT to win the 2030s, then move to additive manufacturing, 3D printing at industrial scale, to win the 2040s. Hyundai built its Georgia Metaplant around robots and digital twins from day 1. The factory becomes software. The winners ship updates. The losers ship excuses.