Earlier quoted context omitted.
The underlying technology for AWS was developed internally and it was not customer facing at first. Will this myth ever die? https://www.networkworld.com/article/2891297/the-myth-about-...
Did Amazon internally dog-food it before it went public? Maybe that's the confusion.
But if someone with deeper insight than someone who has been working at Amazon/AWS for -3 days (I start Monday), I’m glad to be proven wrong.