A company hosts a site on EC2 instances behind an ALB and uses Route 53 for DNS. The company needs the domain's apex (root) to point to the website. Which DNS record type should be used for the zone apex?

An alias record is the correct choice because it allows the zone apex (e.g., example.com) to point to AWS resources like an Application Load Balancer (ALB). Traditional CNAME records cannot be used at the zone apex because doing so would conflict with other required records like SOA and NS records. An A record would require a static IP address, which ALBs do not provide directly and can change. AAAA records are for IPv6 addresses, and while an ALB can support IPv6, the fundamental limitation of using a CNAME at the apex still applies, making an alias record the appropriate solution for both A and AAAA record types when pointing to AWS resources.