Mux Data's Viewer Experience Score is designed to provide meaningful data about video performance at a quick glance while allowing users to delve deeper when needed. The score is composed of four underlying scores focusing on playback failures, rebuffering, startup time, and video quality. Scores are useful as they summarize the entire story in just a few words, with the headline being a single number that describes how happy users are with system performance. Mux Data has recently released an updated version of its Viewer Experience Score, which includes changes such as moving from binary scores to a function, capturing tradeoffs, and extending the scale.