This document discusses Industry 4.0, the current phase of the industrial revolution driven by cyber-physical systems. It outlines the evolution through 4 industrial revolutions from mechanization to today's data-driven systems. The 6 design principles of Industry 4.0 are described as interoperability, virtualization, decentralization, real-time capability, service orientation, and modularity. The building blocks that enable Industry 4.0 are identified as the industrial internet of things, cybersecurity, additive manufacturing, augmented reality, big data analytics, and autonomous robots. Examples are given of Siemens and Trumpf implementing Industry 4.0 solutions in medical implants and smart machine components. The impact of Industry 4.0 is outlined as significant