Sure, but then your app needs to communicate across the Internet if you share data across regions. This can be expensive and/or slow and/or unreliable. http://a

Sure, but then your app needs to communicate across the Internet if you share data across regions. This can be expensive and/or slow and/or unreliable. http://aws.amazon.com/ec2/faqs/#how_will_I_be_charged_for_data_transfer http://aws.amazon.com/ec2/faqs/#how_will_I_be_charged_for_da...