This document discusses Industry 4.0, the current fourth industrial revolution driven by cyber-physical systems. It outlines the evolution of previous industrial revolutions and the key building blocks of Industry 4.0, including cyber-physical systems, the industrial internet of things, cloud computing, cognitive computing and artificial intelligence. Examples are given of how companies like Siemens, Trumpf and GE are implementing Industry 4.0. The potential impacts of Industry 4.0 are wide-ranging across the economy, business, society and individuals.