Weighted - Split requests by %, supports health checks
Latency - Sends traffic to region with lowest latency
Failover - Active/Passive Routing
Common DNS Types
Start of authority record (SOA) - Specifies authoritative information about a DNS zone, including the primary name server, the email of the domain administrator, the domain serial number, and several timers relating to refreshing the zone.
Nameserver (NS) - Delegates a DNS zone to use the given authoritative name servers
Address (A) - IP address to direct traffic to
Canonical Name (CNAMES) - Alias of one name to another
Mail Exchange (MX) - Maps a domain name to a list of message transfer agents
PTR - Pointer to a canonical name
Facts
You can register domains on AWS
Sometimes it can take days to register a new domain name
You can integrate SNS to be notified of health check failures
Health checks can be applied to individual record sets
Given the choice always choose an alias record over a CNAME