The concept of a 'digital twin' in manufacturing refers to a virtual replica of a physical object or system that allows for real-time monitoring and analysis. By using sensors and IoT technology, data from the physical counterpart can be captured and reflected in the digital model. This enables manufacturers to simulate various scenarios and analyze performance outcomes, leading to enhanced decision-making. Digital twins can assist in predictive maintenance, optimizing workflows, and improving product design through iterative testing and feedback. As a result, they provide significant value by increasing efficiency, reducing downtime, and driving innovation in manufacturing processes.