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Consider this scenario Two EC2 Instances in two DIFFERENT accounts in us-east-1 communicate over the Public IP (The two accounts are not linked and there is no VPC-peering or anything)

EC2 A -----[us-east-1 over public IP]-----> EC2 B

It is very clear for me that the EC2 A will pay for Data Transfer OUT

BUT

1) How much is EC2 A charged for Data Transfer OUT ?

  • (a) $0.090/GB - Data Transfer OUT From Amazon EC2 To Internet
  • (b) $0.010/GB - Data Transfer OUT From Amazon EC2 To Amazon EC2 in the same AWS Region Using a public or Elastic IPv4 address

2) How much is EC2 B charged for Data Transfer IN ?

  • (a) $0,000/GB - Data Transfer IN To Amazon EC2 From Internet
  • (b) $0,010/GB - Data Transfer IN To Amazon EC2 From Amazon EC2 in the same AWS Region Using a public or Elastic IPv4 address

I already contacted the support and got different answers, so I'm confused and hope that someone from AWS or community could solve this confusion.

Best Regards

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  • In aws.amazon.com/ec2/pricing/on-demand, see the "Using an IPv6 address from a different VPC" and "Using a public or Elastic IPv4 address" bits. Looks like $0.010/GB to me.
    – ceejayoz
    Jun 8, 2018 at 15:58
  • @ceejayoz you mean EC2 A and EC2 B pays $0.010/GB each ?
    – Eltorrooo
    Jun 8, 2018 at 16:01
  • It appears that way to me, yes.
    – ceejayoz
    Jun 8, 2018 at 16:07

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