The rule 'SIGNAL - AWS Console SSO Sign-In' is designed to monitor AWS Console sign-in events specifically related to Single Sign-On (SSO) using CloudTrail logs. It identifies successful authentication events generated from the AWS SSO service in the specified region (us-east-1). The rule's execution is based on the presence of a successful authentication event where the `eventName` is 'Authenticate', indicating that a user has signed in successfully. Although the rule is enabled with a defined deduplication period of 60 minutes and a threshold of 1, it is categorized under 'Info' severity and does not trigger alerts upon detection. This makes it suitable for observation rather than immediate response, allowing security teams to track regular sign-in activities and potentially identify anomalies in user behavior over time. The rule includes a single test case that checks for the expected authentication events based on specific attributes, ensuring its functionality in monitoring related sign-in activities.