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A comment on Ask HN: Is your company sticking to on-premise servers? Why?. Parent comment

Re:Ask HN: Is your company sticking to on-premise servers? Why? by resonator on Wednesday May 06, 2020 @07:31PM (#23097722)
> How much would it cost to move this across boxes in EC2? I actually don't know, that's not a rhetorical question.

Data transfer between instances in the same AZ is free. If the data crosses AZs, you're changed $0.01 per GB in both directions. This is for instances on a VPC. I think the pricing model is different for classic EC2.

There are some exceptions like all traffic between EC2 and ALBs being free.

Edit: Pricing is described at https://aws.amazon.com/ec2/pricing/on-demand/#Data_Transfer

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Re:Ask HN: Is your company sticking to on-premise servers? Why? by takeda on Thursday May 07, 2020 @01:58AM (#23100134)
and if you go for resilience you will do a lot of that cross AZ talking, unless you also design your apps to know the infrastructure and consider that when communicating (most companies don't do it)
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