A company needs to monitor a growing number of Amazon S3 buckets across two AWS Regions. The company also needs to track the percentage of objects that are encrypted in Amazon S3. The company needs…

While S3 Storage Lens can create custom dashboards, creating a separate dashboard for each region increases operational overhead and prevents a unified view, contradicting the 'least operational overhead' and centralized dashboard requirements.

Deploying custom AWS Lambda functions in each Region to gather and process S3 metrics would involve significant development, deployment, and ongoing maintenance, leading to high operational overhead compared to a managed service like S3 Storage Lens.

Amazon S3 Storage Lens provides organization-wide visibility into S3 storage usage and activity, including metrics for object encryption, across multiple regions and accounts. The default dashboard aggregates these metrics, offering a pre-configured solution for compliance teams without requiring any additional setup or custom development, thus providing the least operational overhead.

An Amazon EventBridge rule reacting to CloudTrail events for S3 object creation tracks individual events but does not provide an aggregated dashboard view of the percentage of objects encrypted across all existing S3 inventory for compliance reporting.