I worked there in 2011 and I'm pretty sure not everything was on AWS at that time.
I don't know how to square that with the tweet: my own understanding could be wrong, or it could be a misleading stat like 100% of public traffic hits a server on AWS infrastructure but not all of the other backend services were.
I don't know how to square that with the tweet: my own understanding could be wrong, or it could be a misleading stat like 100% of public traffic hits a server on AWS infrastructure but not all of the other backend services were.