For QoS to be truly effective, you must configure a QoS-capable connection from end to end (PC, network switches, and routers to the cloud), because any part of the path that fails to support QoS can degrade the quality of the entire call. Prioritizing the traffic for real-time communications services such as Teams is important to deliver a business-grade user experience. QoS is a mechanism you use to prioritize certain types of network traffic.
Applies to: Microsoft Teams In this article This article will help you prepare your organization's network for Quality of Service (QoS) in Microsoft Teams.Quality of Service (QoS) in Microsoft Teams