Appvance coined the term "Proactive APM" (Application Performance Management) to demonstrate techniques and tools for business managers, engineers, and testers a way to anticipate the end-user experience while the app is under development. It simulates user load on apps once the app launches. This allows for instant diagnoses when there are production issues, by comparing expected transaction times with potential issues. If you are already using New Relic, you’ll want to add Appvance PerformanceCloud to your app development and testing environment.