Industry 4.0 has arrived. It has been an evolution over the years. Right from steam age (1.0) to electric age (2.0) to computer age (3.0) to the present (4.0). What really defines industrial 4.0 is the Internet of Things (IoT) and related services. The developing countries like India are set to gain from this as they are the greenfield for this revolution, whereas the existing industrial giants will be a little slower to adopt it due to existing investments.