We are pleased to release a new Billing Alert function. With this new function, a billing alert notification email will be sent automatically to the primary (root account) email address when your ongoing monthly bill total exceeds a specified amount.

By configuring an alert, you can be notified of unexpected charges that may occur due to abnormal data usage or other billable services, and proactively take control.

In addition, as the Billing Alert function uses Event Handler behind the scenes, a new "Monthly bill amount" Event Handler rule is now available. In addition to sending a notification email, you can configure a custom Event Handler rule to execute a webhook, invoke an AWS Lambda function, or perform other actions when your monthly bill total exceeds the threshold.

Please note that the ongoing monthly bill total is updated at regular intervals rather than in real time, so there may be some delay between the time the bill total exceeds the specified amount and when the notification email (or other actions if configuring a custom Event Handler) is sent.

For more information on enabling the Billing Alert function, please refer to the Billing Information documentation.

To set up a custom Event Handler rule, please refer to the Event Handler documentation.