60. Route 53 Weighted Routing Policy
Allows to split traffic based on different weights assigned. For example, we can set 10% traffic to go to US-EAST-1 and 90% traffic to go to EU-WEST-1. User types domain name into browser >> Navigate to Route 53 >> Route 53 distributes 10% traffic to US-EAST-1 and 90% traffic to EU-WEST-1.
i) We can set health checks on individual record sets.
ii) If a record set fails a health check it will be removed from Route 53 until it passes the health check.
iii) We can set SNS notifications to alert if a health check is failed.