Embedded systems play a vital role in controlling IoT by acting as the brain of connected devices. They process data from sensors, execute programmed instructions, and ensure seamless communication with other devices or cloud platforms. By managing real-time operations, embedded systems help IoT devices function efficiently, from smart homes to industrial automation. They also handle power management, security, and connectivity, making IoT applications reliable and scalable. With their ability to integrate hardware and software, embedded systems are the foundation of intelligent IoT solutions. To understand this better, learners can explore an embedded system course.