RUM (also called End User Experience Management) is becoming a critical feature of modern APM solutions. This is being driven by the emergence of rich client platforms like Ajax, Adobe Flash, Adobe Flex, and Microsoft Silverlight as well as the emergence of the iPad and Android based tablets as platforms for client side business applications. These applications development trends when combined with virtualization, IT as a Service and Cloud Computing will make RUM into a critical capability for being able to assess how the end user is doing irrespective of what is happening to the deployment model of the back end application.
In a world where you are changing everything – by moving applications in whole or in part from physical to virtual, to private cloud and ultimately (at least for some applications) to a public cloud, having an external reference point from which to judge the performance of these applications is essential. That reference point might best be the end user’s workstation, laptop or mobile device. Real User Monitoring solutions are likely to play a prominent role here.