Enabling S3 event notifications for a bucket enables a tenant to send notifications about specified events to a destination service that supports the AWS Simple Notification Service™ (SNS). You can configure notifications for a bucket using the Tenant Manager.
After you configure event notifications, whenever a specified event occurs for an object in the source bucket, a notification is generated and sent to the Simple Notification Service (SNS) topic used as the destination endpoint. To enable notifications for a bucket, you must create and apply valid notification configuration XML. The notification configuration XML must use the URN of an event notifications endpoint for each destination.
For general information on event notifications and how to configure them, see Amazon documentation. For information on how StorageGRID Webscale implements the S3 bucket notification configuration API, see the instructions for implementing S3 client applications.
If you enable event notification for a bucket that contains objects, notifications are sent only for actions that are performed after the notification configuration is saved.