A company uses an organization in AWS Organizations to manage its AWS accounts.

Create an Amazon EventBridge rule in the automation account to send account creation events to the default event bus in the services accounts. Update the default event bus in the services accounts to allow events from the automation account.

Create a custom Amazon EventBridge event bus in the services accounts. Update the custom event bus to allow events from the automation account. Create an EventBridge rule in the services account that directly listens to CloudTrail events from the automation account.

Create a custom Amazon EventBridge event bus in the automation account and the services accounts. Create an EventBridge rule and policy that connects the custom event buses that are in the automation account and the services accounts.

Create a custom Amazon EventBridge event bus in the automation account. Create an EventBridge rule and policy that connects the custom event bus to the default event buses in the services accounts.