Quality of Service (QoS) is a technology that helps ensure your internet connection runs smoothly, especially when multiple devices are using it simultaneously. It manages and prioritizes different types of network traffic, ensuring that important applications get the bandwidth and performance they need. Businesses use QoS to prioritize critical data—such as VoIP (internet phone calls), video conferences, or other latency and jitter sensitive applications—over less critical or latency and jitter sensitive data, like file downloads. This helps reduce delays and improve performance for the activities that matter most.