The most important metrics designers must track

Because user experience is subjective, it's difficult for designers and product managers to create a clear and measurable goal.

A great designer establishes a standard for product UX and measures it regularly. Here are the top three metrics that designers should monitor.

System usability scale (SUS)

SUS offers a "quick and dirty" but credible tool for assessing usability. It consists of a ten-item survey with five answer options ranging from "Strongly agree" to "Strongly disagree."