I recently did some technical consulting for Netflix.
I can say that they are really, truly committed to cloud IT, per their public pronouncements. Most large companies are still just dipping a toe in the water, so it’s significant that Netflix took the plunge head-first.
They’re Java-centric and mainly use Open Source, with the notable exception of Perforce. 🙂
The following public links explain Netflix’s engineering philosophy.
AWS Forums: unusual ELB activity not from my domain
Jason Brown: Cassandra from the trenches: migrating Netflix
Why Netflix’s Facebook app would be illegal
Adrian Cockcroft reveals how Netflix is driving Amazon to the limit
Netflix Rolls Out Its Own CDN: Open Connect
Chaos Monkey released into the wild