{{Short description|Method of testing in various settings}} '''Application performance engineering''' is a method to develop and test application performance in various settings, including mobile computing, the cloud, and conventional information technology (IT).
==Methodology==
According to the American National Institute of Standards and Technology, nearly four out of every five dollars spent on the total cost of ownership of an application is directly attributable to finding and fixing issues post-deployment. A full one-third of this cost could be avoided with better software testing.<ref>National Institute of Standards and Technology (May 2002). [https://www.nist.gov/system/files/documents/director/planning/report02-3.pdf ''The Economic Impacts of Inadequate Infrastructure for Software Testing'']. Page 1.</ref>
Application performance engineering attempts to test software before it is published.<ref>McConnell, Steve (2009). ''Code Complete''. Microsoft Press. Page 960. {{isbn|9780735636972}}</ref> While practices vary among organizations, the method attempts to emulate the real-world conditions that software in development will confront, including network deployment and access by mobile devices.<ref>"Testing and Optimizing Mobile Application Performance," Software Test Professionals Online Summit, June 6, 2012.</ref>{{Full|date=May 2014}} Techniques include network virtualization.<ref>Metzler, Jim & Metzler, Ashton (2011). [http://www.webtorials.com/main/resource/papers/webtorials/2011-app-delivery/handbook/2011-App-Svc-Delivery-Full.pdf ''The 2011 Application & Service Delivery Handbook'']. Webtorials.com. Pages 10, 81, 82.</ref>
==See also== * Network virtualization * Performance engineering * Service virtualization * Software performance testing
==References== {{Reflist}} ==Further reading== * Warren, Trevor. [http://www.practicalperformanceanalyst.com SPE BoK]. Practical Performance Analyst - Performance Engineering Community & Body Of Knowledge. * Metzler, Jim & Taylor, Steve (January 28, 2011). [https://web.archive.org/web/20211016180225/https://www.computerworld.com/article/2512671/application-performance-engineering.html ''Application performance engineering'']. Computerworld. Archived October 16, 2021. * Metzler, Jim ([https://web.archive.org/web/20120514075143/http://ape.shunra.com/WP-TheMandateforApplicationPerformanceEngineering.html ''The Mandate for Application Performance Engineering'']. Shunra. Archived May 14, 2012. * [https://web.archive.org/web/20120918214913/http://ape.shunra.com/WP-ApplicationPerformanceEngineering.html'' Application Performance Engineering: A Lifecycle Approach to Achieving Confidence in Application Performance'']. Shunra. Archived September 18, 2012. * [https://web.archive.org/web/20130522174924/http://applicationperformanceengineeringhub.com/ Application Performance Engineering Hub Blog]. Archived May 22, 2013. * [https://pflb.us/ Performance Engineering Services].
Category:Application software Category:Software testing