Industry 4.0 is the new phase of the industrial revolution that focuses primarily on machine learning, fuelled by real-time data monitoring and processing, interconnectivity between machines and computers in the autonomous systems. Some refer Industry 4.0 as IIoT( industrial internet of things) or smart manufacturing. https://www.quora.com/What-is-the-main-difference-between-Industry-3-0-and-Industry-4-0/answer/Sharon-James-220