Comment by AtlasBarfed 5 hours ago
"When deploying infrastructure across multiple AWS availability zones (AZs), bandwidth costs can become a significant operational expense"
An expense in the age of 100gbit networking that is entirely because AWS can get away with charging the suckers, um, customers for it
Definitely not. Azure doesn't charge for intra region costs FWIW.
Getting terabits and terabits of 'private' interconnect is unbelievably cheap at amazon scale. AWS even own some of their own cables and have plans to build more.
There is _so_ much capacity available on fiber links. For example one newish (Anjana) cable between the US and Europe has 480Tbit/sec capacity. That's just one cable. And that could probably be upgraded to 10-20x that already with newer modulation techniques.
AZs are whole datacenters, so I imagine their backbone bandwidth between AZs is a fraction of total bandwidth inside the DC. If they didn't charge it'd probably get saturated and then there's not much point in using them for reliability.
The internet egress price is where they're bastards.