An IoT gateway is a smart device that acts as a bridge between IoT devices and the cloud. It collects data from sensors, machines, and devices, then processes and transmits it to cloud servers for further analysis. This makes communication between devices seamless and more efficient. An IoT gateway also filters, encrypts, and secures the data, which helps prevent cyber threats. In areas where real-time decisions are needed, the gateway can perform edge computing—processing data locally. This reduces latency and improves response time. Whether in smart homes, industries, or agriculture, the IoT gateway plays a vital role in managing data flow and ensuring reliable system performance. Without it, large-scale IoT systems wouldn’t function properly.