To monitor S3 bucket events with AWS CloudTrail, follow these steps:
Log in to your AWS Management Console and navigate to the CloudTrail service.
Click on "Trails" in the left-hand menu and then click on "Create trail" to set up a new trail for monitoring S3 bucket events.
Enter a name for your trail and choose the S3 bucket where you want to store your CloudTrail logs.
Select the S3 bucket where you want to monitor events in the "Data events" section.
Choose the types of events you want to monitor, such as object-level API operations like GetObject, PutObject, and DeleteObject.
Configure any additional settings for your trail, such as enabling log file validation and encryption, and then click "Create" to start monitoring S3 bucket events with CloudTrail.
You can now view and analyze the logs of S3 bucket events in the CloudTrail console, or export them to Amazon S3 or Amazon CloudWatch for further analysis and monitoring.