What does APDEX stand for in performance measurement?

APDEX stands for Application Performance Index, which is a standardized way to measure user satisfaction based on application performance. The APDEX score is calculated based on response times experienced by users, categorizing them into three levels: satisfied, tolerating, and frustrated. This metric provides a clear and concise way to express performance in a manner that resonates with end-users, allowing teams to understand how performance impacts user experience directly.

The focus on user satisfaction differentiates APDEX from other terms that might relate to performance or data exchange but do not capture the same user-centric approach. Understanding this concept is crucial for teams looking to optimize applications for better performance and improved user satisfaction.