A) Amazon Route 53
Route 53 is a domain name system service by AWS. When a Disaster does occur , it can be easy to switch to secondary sites using the Route53 service. The AWS Documentation additionally mentions the following Amazon Route 53 is a highly available and scalable cloud Domain Name System (DNS) web service. It is e to give developers and businesses an extremely reliable and cost effective way to route end users to Internet applications by translating names like www.example.com into the numeric IP addresses like 192.0.2.1 that computers use to connect to each other. Amazon Route 53 is fully compliant with IPv6 as well
