But their equipment is in there, 100% guaranteed (or at least was in 2012).

Edit: Here's a better reference:

Equinix yesterday launched phase two of its Sydney 3 International Business Exchange datacentre facility (SY3-II) in Alexandria, with Amazon Web Services (AWS) onboard as one of its first customers.... It was only confirmed yesterday — despite it being the worst-kept secret in the industry - that it is using Equinix's SY3-II datacentre.

http://www.zdnet.com/pictures/equinix-celebrates-launch-of-s...

I don't know for sure, but I also think that AWS Sao Paulo is in the Terremark DC.