Main difference is that one is safe to use at the zone apex (ex. naked domain, such as example.com), whereas the other is not. A/AAAA allows you to have the bare domain functional. More detail on the "Comparing Alias and CNAME Records" page <https://ns1.com/articles/comparing-alias-and-cname-records>.
-- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/cf14b13f-69fa-4b37-842e-99646b3ec29d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.