Why are you here? As a performance tester we often encounter challenges about the value of our work, the financial benefits of performance or the quantitative calculations that prove we are actually making a difference. In the worst cases we can be caught off-guard without a meaningful reply to questions from our managers, our stakeholders and customers. In this session, we will review techniques for improving our responses to some of these challenges. We will review a few new perspectives on performance testing value and benefit. We will introduce a few quantitative models that help to calculate performance return on investment (ROI).