One of the reasons why Route53 is good is because they give different nameservers to each hosted zone - unless you choose to use a branded record-set. I've see

One of the reasons why Route53 is good is because they give different nameservers to each hosted zone - unless you choose to use a branded record-set. I've seen them be hit by dDos attacks in the past, but never had any significant impact. (I wrap Route53 and handle storing DNS records in a git repository over at https://dns-api.com/ https://dns-api.com/ Adding support for other backends is my current priority to allow more redundancy.)