On the other hand, the fact that https://forums.aws.amazon.com/message.jspa?messageID=203167 has never been answered suggests they do not, as they would answer affirmatively if it was true surely. Of course they may use a mixture.
EDIT: Interesting that James Hamilton is on their team and thinks they should use it http://perspectives.mvdirona.com/2009/10/07/YouReallyDONeedE...
The costs involved were a lot higher 3-5 years ago than they are today.
On the other hand, the fact that https://forums.aws.amazon.com/message.jspa?messageID=203167 has never been answered suggests they do not, as they would answer affirmatively if it was true surely. Of course they may use a mixture.
EDIT: Interesting that James Hamilton is on their team and thinks they should use it http://perspectives.mvdirona.com/2009/10/07/YouReallyDONeedE...