[n42]

I would love to use AWS's registrar exclusively for anything I host there, but unfortunately they have a pretty limited selection of TLDs. it's more important to me that all my domains are in one place so I can review them at once. I really wish they would support more.

[tmpz22]

If "viewing all at once" in a single UI is more important then security, reliability, etc., you don't have many constraints to begin with.

[n42]

a domain registrar has three functions:

1. configure my nameservers and whois info.

2. pay my bills.

3. prevent other people from taking over my domain.

I can see how AWS would give you more confidence in #3.

considering AWS is just reselling Gandi, I would love to hear how AWS (or any registrar) can be more reliable than another :)