The Industrial Internet of Things (IIoT) plays a crucial role as the backbone of Smart Systems by enabling connectivity and intelligent communication between various devices and systems. IIoT allows for the seamless integration of sensors, machines, and other industrial equipment, creating a network of interconnected devices that can collect, analyze, and share data in real-time. This connectivity enables automation, remote monitoring, predictive maintenance, and optimization of industrial processes, leading to improved efficiency, productivity, and cost-effectiveness. For example, in a smart manufacturing system, IIoT sensors can monitor the performance and health of machines, detect anomalies, and automatically trigger maintenance requests or adjustments, minimizing downtime and optimizing production schedules.