AWS Certified CloudOps Engineer Associate SOA-C03 Practice Question

A company has multiple production AWS accounts. For every account, critical CloudWatch alarms already publish state-change events to the account's default event bus. Operations engineers sign in only to the management account and must see a pop-up notification in the AWS Management Console whenever any of those alarms enters the ALARM state. Using AWS User Notifications, what is the MOST efficient way to meet this requirement?

Subscribe each alarm's SNS topic to an AWS Chatbot Slack channel and enable Slack as the preferred channel in AWS User Notifications.
Create an AWS Systems Manager Incident Manager response plan that watches the alarms across accounts and selects console notifications as the engagement channel.
Share the CloudWatch alarms through a cross-account dashboard and rely on the dashboard icons to indicate alarm state when engineers open it.
Create a cross-account Amazon EventBridge rule in each production account that forwards CloudWatch AlarmStateChange events to the management account event bus, then configure an AWS User Notifications rule in the management account that targets the AWS Console channel.

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Answer Description

CloudWatch automatically sends an AlarmStateChange event to the local EventBridge default event bus. A cross-account EventBridge rule can forward that event to an event bus in the management account. AWS User Notifications consumes EventBridge events; creating a notification rule that matches the forwarded alarm event and chooses the AWS Console channel causes a banner/pop-up to appear in the Notification Center of anyone signed in to that account. The other options do not surface the alert in the console: AWS Chatbot sends to chat platforms, shared dashboards only show status when manually opened, and Incident Manager engages contacts by phone, SMS, or email but not via the console notification center.

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