A company runs an Oracle database on premises and plans to migrate to AWS. The company wants to upgrade to the most recent version, set up disaster recovery, minimize operational overhead for normal operations and DR, and retain access to the database's underlying operating system. Which solution meets these requirements?

Migrating to Amazon RDS Custom for Oracle meets all requirements. RDS Custom provides access to the underlying operating system, which is crucial for specific Oracle configurations or third-party integrations. Creating a read replica in another AWS Region establishes a disaster recovery solution with minimal operational overhead, as RDS manages the replication. RDS Custom also allows for upgrading to the most recent Oracle versions. Amazon EC2 instances would require significant operational overhead for patching, backups, and DR setup. Amazon RDS for Oracle (standard) does not provide access to the underlying operating system, failing a key requirement. While Cross-Region automated backups offer DR, they are not a live replica for immediate failover. Creating a standby database in another Availability Zone (within the same region) provides high availability but not cross-region disaster recovery.