Refer to the following references:
- Route 53 features: https://aws.amazon.com/route53/features/
- Route 53 record types: https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/ResourceRecordTypes.html
- List of DNS record types: https://en.wikipedia.org/wiki/List_of_DNS_record_types
- Choosing a routing policy: https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-policy.html
- Route 53 health checks: https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/dns-failover.html