Which feature enables users to receive notifications for events like object creation or deletion in S3?

The feature that enables users to receive notifications for events such as object creation or deletion in Amazon S3 is S3 Event Notifications. This capability allows you to configure notifications to be sent when certain actions occur with the objects in your S3 buckets. For instance, you can set up notifications for actions like the creation of a new object, the deletion of an object, or the restoration of archived objects.

These notifications can be sent to various AWS services, including Amazon SNS (Simple Notification Service), Amazon SQS (Simple Queue Service), or AWS Lambda. By utilizing S3 Event Notifications, developers and architects can build event-driven architectures that trigger workflows or processing logic automatically in response to changes in bucket content, enhancing responsiveness and automation within applications.

Other options, while relevant to S3 functionality, do not serve the purpose of sending event-based notifications. S3 Lifecycle Rules manage the transition and expiration of objects in S3 buckets but do not provide event notifications. S3 Select is a feature used to retrieve a subset of data from within an object, which is not relevant to event notification, and S3 CORS (Cross-Origin Resource Sharing) is focused on managing access to S3 resources from different origins but does not involve notifications for events within S3