Availability zones are randomized per accounts; my us-east-1a might be the same ... | Hacker News

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		DrStalker on April 25, 2015 \| parent \| context \| favorite \| on: High Frequency Trading on the Coinbase Exchange Availability zones are randomized per accounts; my us-east-1a might be the same as your us-east-1b. This is presumably done to stop everyone putting things into the same AZ by just choosing the first one in the list. There is some more detail here: http://alestic.com/2009/07/ec2-availability-zones

vosper on April 25, 2015 [–]

That's true, but a latency based test should still let you figure out which zone you need to run in. But everyone would need to do the test for themselves.

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