Performance issues today are compounded by increasingly complex infrastructures that IT teams must contend with when delivering applications. As a result detecting and fixing performance problems is hard. Sluggish end-user transactions may present themselves as being slow due to the code. However, that slowness is often not the root cause, but rather a symptom of an underlying infrastructural issue hidden from view. Examine common, yet elusive application performance problems that reveal themselves only when you look at them from the right vantage point.