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The following documents and articles provide background information on Apdex:

See side-by-side test results of ten web sites from five US user locations that are reported using averages and Apdex.  The results are documented in “Averages Hide the Real End-User Experience: Apdex Tells the Full Story,” NFR 5086 by Peter Sevcik, April 2007.  The Apdex reports of the very same measurement data uncover many more performance issues.


Read a Tolly Group white paper on Guaranteed WAN Application Performance Using Ipanema Technologies products (December 2006). The White Paper evaluates the Ipanema System Ver. 4.3 and illustrates its effectiveness in providing desirable and predictable application performance in congested networks.  The results are shown using the Apdex methodology.

The Apdex Executive Director, Peter Sevcik of NetForecast, will give a presentation entitled “The Application Performance Index (Apdex) Standard” at the International Computer Measurements Group (CMG) conference in Orlando Florida on December, 7 2005, 9:15 AM, session 413 in the Miami room. The Apdex Alliance will also host a birds-of-a-feather “BOF” that evening.

“Apdex interprets app measurements,” by Peter Sevcik, Network World, Technology Update, June 27, 2005.

Apdex is best described in the article “Defining The Application Performance Index,” by Peter Sevcik, published in Business Communications Review, March 2005. This is a good overview of Apdex and the formation of the Apdex Alliance.