I was at AWS for 6 years (left 2 years ago... today!), and I've always been a proponent of being more open and communicative with developers, but it rarely happened - I guess that AWS' PR policy and such are a big showstopper for these kind of discussions. Although, some individuals did their best (e.g. Jeff Barr) to try to share as much as possible.
It seems that the Google guys know how to do it.
Keep doing it. It will help your business a lot.