So, who is responsible for a smooth video experience ? The ISP? the content provider? the transit network between the two?
According to Verizon, it is not them (at least in the case of Netflix streaming).
David Young report to the carrier's Public policy Blog:
|Netflix ISP Ranking for Verizon FiOS, Feb-Jun 2014|
He was understandably confused by some of the misleading public accounts that inaccurately suggest widespread congestion that could affect Netflix traffic on Verizon’s network [see "Netflix to Verizon: Nope, Your Congested Pipes Are Still Your Fault" - here]
.. our network operations team studied the network connection for this customer for the week preceding the date that he emailed us. They measured the utilization – or the percentage of total capacity used – at every link in the Verizon network – from the customer to the edge of our network, where we receive Netflix traffic .. there was no congestion anywhere within the Verizon network. There was, however, congestion at the interconnection link to the edge of our network (the border router) used by the transit providers chosen by Netflix to deliver video traffic to Verizon’s network .. For whatever reason (perhaps to cut costs and improve its profitability), Netflix did not make arrangements to deliver this massive amount of traffic through connections that can handle it"
See "Why is Netflix Buffering? Dispelling the Congestion Myth" - here.