Data transfer cost on VPC peering with different AWS accounts

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My customer is planning to create VPC peering with different AWS accounts and they are confused who is the payer for data transfer in this situation.

All accounts are in same AWS Region (Seoul)

Account A (VPC A) <---> VPC Peering <---> Account B (VPC B)

[Scenario]

VPC Peering Data In/Out = 0.01 USD/GB

Account A (VPC A) send 2gb data then receive 1gb data as response from Account B (VPC B)

Data flow would be to below.

  1. Data Transfer Out from VPC A = 0.02 USD (0.01*2gb) ==> Payer: Account A

  2. Data Transfer In to VPC B = 0.02 USD (0.01*2gb) ==> Payer: Account B

  3. Data Transfer Out from VPC B = 0.01 USD (0.01*1gb) ==> Payer: Account B

  4. Data Transfer In to VPC A = 0.01 USD (0.01*1gb) ==> Payer: Account A

So, totally Account A need to pay 0.03 USD and Account B need to pay 0.03 USD.

I would like to double check if my understanding is correct.

asked 2 years ago1068 views
1 Answer
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answered 2 years ago

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