A compliance team requires customer-controlled RMAN backup schedules to its own S3 buckets on Exadata Database Service. Which preparation is required?

1. Enable the documented direct S3 integration and configure supported connectivity and access.
2. Enable only CloudWatch CPU alarms.
3. Choose Autonomous Database on Dedicated Infrastructure and assume the same user-managed backup support.
4. Assume the managed-backup integration grants all user buckets unrestricted access.