“The Answer, My Friend, Lies In Measurement” (apologies to kc & CAIDA)
- The edges of the network have the strongest motivation to optimize
- They also have the best data for it: their existing traffic!
- It’s the end to end principle
“The function in question can completely and correctly be implemented only with the knowledge and help of the application standing at the end points of the communication system.” --- Saltzer et al, quoted in RFC 1958