Apdex is a performance-measurement standard that strives to show the relationship between recorded performance measurements and real-user satisfaction. It offers a uniform means of measuring how well performance meets user expectations. Apdex is used to give you a quick and easy rating that you can use to evaluate the satisfaction of your application’s end users. Apdex ratings in Dynatrace are based on the application-specific thresholds. An apdex measurement rating of 1 equates to perfect performance. An Apdex rating below 0.5 equates to poor performance.
For full details on the Apdex standard, please visit Apdex.org.