A US-based company is expanding their web presence into Europe. The company wants to extend their AWS
infrastructure from Northern Virginia (us-east-1) into the Dublin (eu-west-1) region. Which of the following
options would enable an equivalent experience for users on both continents?

A.
Use a public-facing load balancer per region to load-balance web traffic, and enable HTTP health checks.

B.
Use a public-facing load balancer per region to load-balance web traffic, and enable sticky sessions.

C.
Use Amazon Route 53, and apply a geolocation routing policy to distribute traffic across both regions.

D.
Use Amazon Route 53, and apply a weighted routing policy to distribute traffic across both regions.

Explanation:
Geolocation routing lets you choose the resources that serve your traffic based on the geographic location of
your users, meaning the location from which DNS queries originate. For example, you might want all queries
from Africa to be routed to a web server with an IP address of 192.0.2.111.
Another possible use is for balancing load across endpoints in a predictable, easy-to-manage way, so that each
user location is consistently routed to the same endpoint.
http://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-policy.html#routing-policy-weighted