Transit Gateway Peering - Cross Accounts Not Sharing Payer ID

Question

Is same Payer ID required for cross-account TGW peering? A customer is wanting to peer with multiple 3rd parties using DGW. I understand that cross-region and cross-account TGW peering is supported. However, it's not clear if cross-account peering requires the accounts to have the same Payer ID, similar to how associations between TGW and DXG in separate accounts do.

AWS-User-9306209 · Accepted Answer

By reading the documentation, and also doing a test between two personal accounts - I can confirm that it is possible to peer Transit Gateways between accounts **even when they do not have the same payer account**.

You do need the following details from the account that you are peering with:

- Account Name
 - Region
 - Transit Gateway ID

The instructions can be found below:

**Source:**
[https://docs.aws.amazon.com/vpc/latest/tgw/tgw-peering.html][1]

[1]: https://docs.aws.amazon.com/vpc/latest/tgw/tgw-peering.html

Transit Gateway Peering - Cross Accounts Not Sharing Payer ID

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