My guesses: a) Amazon.com/co.uk/etc traffic is too big even for CloudFront. b) They don't want Amazon.com traffic to evict AWS customers' cached items out of Cl

My guesses: a) Amazon.com/co.uk/etc traffic is too big even for CloudFront. b) They don't want Amazon.com traffic to evict AWS customers' cached items out of CloudFront, the very reason customers buy CloudFront in the first place. c) Legacy, they just didn't move from Akamai yet.