Traffic Policing and Shaping are Quality of Service techniques that control and regulate network traffic flow. Traffic policing checks bandwidth usage and drops or marks packets that exceed configured limits. In contrast, traffic shaping buffers excess traffic and sends it at a controlled rate to smooth data transmission. These methods help prevent network congestion and ensure fair bandwidth allocation across applications and users. Critical services such as voice, video, and cloud applications benefit from improved performance and stability. Network administrators use these techniques to maintain predictable network behavior and optimize traffic management. They are widely used in enterprise, WAN, and service provider networks.