AWS Control Tower - SNS notifications

Question

Hi Team.

I have installed AWS Control Tower, and I see that sns topics were enabled on Audit Account and every account members. Also I see lambda (named notification forwarder) as subscriptor of sns topic on every account.
on the other hand, I see AWS Config was enabled on every account, and it has delivery method to S3 and SNS topic from the Audit Account.

So, I dont understand why there is a sns on every account, if the AWS Config has configured another SNS topic from Audit Account, or when is used sns local and sns audit account?

Thank you.

Answer

Hi Orlando,

The SNS topic in every account has a destination of lambda forwarder, which forwards the notification to the SNS topic in the Audit account which sends an email to the Audit account email ID. Think of it as a notification collection mechanism from member accounts. Also note that the management account does not have an SNS topic created for control tower.

AWS Control Tower - SNS notifications

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