Industry 4.0 is the 4th industrial revolution, where digital tools change how factories work. Understanding what Industry 4.0 means knowing how smart technologies are used in modern production. The main industry 4.0 technologies include IoT, Artificial Intelligence, Big Data, cloud computing, and automation. These systems help machines share data, predict problems, and work faster with less human effort. This digital shift is the core of the fourth industrial revolution and industrial revolution 4.0. Conclusion In short, Industry 4.0 manufacturing uses smart technologies to improve efficiency, quality, and cost control, making industry 4.0 the future of manufacturing.