3. Low-latency DNS resolution
A zone is hosted across four top-level domains (.com, .net, .co.uk, and .org)
Stripe: all the nameservers in one top-level domain
One Stripe per edge location
8. Zone Apex
Amazon Route 53–specific extension to DNS functionality
Contains a pointer to
CloudFront distribution
ELB load balancer
Amazon S3 bucket that is configured as a static website
Another Amazon Route 53 resource record set in the same hosted zone
11. Geo DNS
Based on the location from which DNS queries originate
By continent, by country, or by state in the United States
‘Default’ resource record set
EDNS0: edns-client-subnet extension
http://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-policy.html#routing-policy-weighted
For example, suppose you create three resource record sets for www.example.com. The three A records have weights of 1, 1, and 3 (sum = 5). On average, Amazon Route 53 selects each of the first two resource record sets one-fifth of the time, and returns the third resource record set three-fifths of the time.