Apdex is the application performance index that takes user's response times and classify them as "satisfied", "tolerable" or "frustrated". It is a simple approach to evaluate the user experience for business applications. Here is described what the Apdex exactly is.
My question: Has anyone of you heard about a new approach how to measure an application's performance? I read on several websites that the Apdex is already outdated. Do you know of newer/better approaches to measure user expectations?