A company transfers files from on-premises to an S3 bucket using an S3 File Gateway. A data engineer needs an automated process that launches an AWS Glue workflow to run multiple Glue jobs whenever a file transfer completes successfully. Which option provides that behavior with the least operational overhead?

The correct option leverages EventBridge's native integration with S3 File Gateway events. S3 File Gateway emits events to EventBridge upon successful file transfers, allowing a rule to directly trigger the AWS Glue workflow. This approach is fully automated and requires minimal configuration, leading to the least operational overhead. Estimating transfer times and using a scheduled rule is unreliable and not event-driven, potentially missing transfers or running unnecessarily. Manually starting an on-demand workflow is not automated and introduces significant operational overhead. While an S3 object-created event can trigger a Lambda function, S3 File Gateway transfers might not directly generate standard S3 object-created events in a way that reliably indicates the completion of the gateway transfer itself. EventBridge's direct integration with S3 File Gateway events is more robust for this specific use case.