In the Modern Application Era, where upwards of twothirds of all GDP is now digital, Application Performance is singularly the highest priority for CIOs because the application is the business. Delivering applications is the primary reason IT exists. The CIO, who heads IT, has no choice but to deliver application performance to assure the business is never constrained by IT. In fact, the CIO is considered a failure when not delivering application performance; ironically, it is very reasonable for a CIO to exceed their planned budget. In short, failing to assure application performance damages the business. What’s challenging is the applications that congest first and longest are the applications with the greatest surges in demand (oftentimes the most valuable apps).