This is the slidedeck for my Velocity 2015 talk (http://velocityconf.com/devops-web-performance-2015/public/schedule/detail/42026). LinkedIn, like many web companies, uses PoPs (point of presence) to terminate TCP connections closer to end-users. This improves the content download time. In this talk, we describe techniques used by LinkedIn to better utilize PoPs through new RUM measurements and in