Shopify recently sent a link asking that I update DNS - They talk about ALIAS or ANAME records, and assert these are different to CNAME and A records.
I understand what CNAME records are, and why you don't use them for the root of the domain - and that ANAMES purport to address this shortcoming, however I do not understand how these are meant to be implemented.
ANAME Records appear to be something made up by "DNS MADE EASY", but from what I can see are not actually implemented as an RFC. Does anyone know how they work ? (Are they simply an abstraction to an A record which substitutes the ANAME with an A record, possibly providing different A records on different nameservers if there are nameservers in multiple places ?
Also, can anyone speculate as to why someone like Shopify would be pushing these (IE how do they benefit from this over using an A record - for that matter, how does it work in place of an A record on the origin of a zone ?)