I understand that AWS has 200 services, some of which are 20 years old, and making them all IPv6-ready would be hard and costly. Backblaze has one cloud service

I understand that AWS has 200 services, some of which are 20 years old, and making them all IPv6-ready would be hard and costly. Backblaze has one cloud service, and the public interface is a boring REST API over boring HTTPS.