I followed the steps on creating sub-domain via Route53 by creating a new Hosted Zone for cdn.domain.com and added the NS to the registrar in addition to the root domain, domain.com NS.
I then added Alternate Domain Name in the CloudFront Distribution that reads cdn.domain.com and saved it. I then waited for the status to get deployed.
My question is,
Do I still need to add an A record for the sub-domain that I created? If so, where will it route?
If I don't need to create an A Record, shall I add a new record CNAME on the root domain Hosted Zone or on the sub-domain Hosted Zone? Because I see no target Available.
IPV6 is also enabled on the CloudFront Distribution. Please advise on what would be my next step.
Thank you!