Kidding aside, VuGen is very useful in a continuous delivery environment. It can be used to create automation scripts for all sorts of application environments, which can then be used to test application performance using LoadRunner, Performance Center or StormRunner, and then used for monitoring your application via HP Business Process Monitoring or AppPulse Active. HP Real User Monitor can even create VuGen scripts directly from Production usage.
VuGen is extremely powerful yet easy to use tool. If app changes frequently, you can either just update the script or re-record it. It all depends on the app, the technology used in it, and the pace of changes.
I've personally worked with scripts that lived for several years, and evolved to meet changes in the application and business, as well as our understanding of user behavior. VuGen gives you a lot of flexibility.
I will explain in short.... We will prepare and provide the scripts to other team they will fix up a process when ever application is deployed it will auto trigger our script and check the performance....