The technology that allows for cellular connectivity in IoT devices is typically provided by cellular networks, specifically technologies such as 4G LTE and 5G. These networks enable devices to communicate over long distances using mobile data, providing connectivity in areas where traditional Wi-Fi is unavailable. This connectivity allows IoT devices to send and receive data, facilitating real-time monitoring and control across various applications, from smart homes to industrial automation. By leveraging cellular technology, IoT ecosystems can expand their reach and enhance functionality.