Unfortunately, unlike Google or Facebook, there seems to be very little information available about Amazon.

So, can (Ex)Amazonians share some interesting facts? I'm interested in just about everything - but especially services. Some specific questions:

- How does service-to-service routing work? Is it just normal TCP/IP or is something more going on?

- What protocols are used for service communication?

- How does service registry handle hierarchical services? I.e. services, that are hidden behind an "interface" service.

Thanks