Comment by donavanm
> Otherwise adhoc/jit is definitely best effort, though we did a few things to help
I should also give a sense of scale here. Hundreds of GB/s to multi TB/s of throughput for a single customer was pretty normal a decade ago. CDNs, classically, are also biased towards latency & throughput. Once you have millions of client requests per second and pushing that kind of volume its kind of expected/implied that the origin is capable of meeting the demand necessary to maximize that throughput.
While cost efficiency maximizing CDNs _were_ a thing they kind of died out with Red Swoosh AFAIK. We repeatedly investigated 'follow the moon' use cases to maximize the diurnal cycle. Outside of a handful of game companies there wasnt any real interest, and the price/revenue wasnt worth investing compared to other priorities. The market wanted better performance, not minimal costs, in the 2000-10s.