An IT company has owned several applications which have end-users around the world. Route53 is being used to route traffic. Depending on the different features of applications, various deployment strategies are implemented. For example, some sensitive applications use Canary deployment while others use Blue/Green deployment. Several applications also use Route53 to implement a disaster recovery plan. Which routing policy in Route53 should be configured to achieve these strategies?

Answer options:

A.Latency for Blue/Green. Simple for Canary. Weighted for Disaster recovery.
B.Simple for Blue/Green. Weighted for Canary. Latency for Disaster recovery.
C.Weighted for Blue/Green. Weighted for Canary. Failover for Disaster recovery.
D.Weighted for Blue/Green. Latency for Canary. Failover for Disaster recovery.

Correct Answer – C
Check
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-policy.html
 for how to choose the right routing policy for Route53.
Option A is incorrect: Because the Latency routing policy is not suitable for Blue/Green as the user cannot control the switch between Blue and Green stack.
Option B is incorrect: Similar to
Option A, the Latency routing policy is inappropriate for Disaster recovery. A latency routing policy is used when the user wants to route traffic to the region that provides the best latency.
Option C is CORRECT: Because Weighted can be used for both Blue/Green and Canary deployments since it provides a simple way to route traffic to two stacks depending on the needs. A failover routing policy can help configure an active-passive failover suitable for a disaster recovery strategy.
Option D is incorrect: Because Latency is not a good choice for Canary deployment.