Edge computing significantly enhances the performance and reliability of IoT systems by processing data closer to the source, reducing latency and network congestion. Instead of sending all data to centralized cloud servers, edge devices analyze and respond to critical information locally. This leads to faster decision-making, improved response times, and reduced dependency on continuous internet connectivity. It also enhances data privacy and security by minimizing data exposure during transmission. These benefits make edge computing a vital component of scalable and efficient IoT solutions. Learning this concept in depth is essential for anyone pursuing an IoT certification course.