When Customers are using the Exadata Cloud Service, what are they responsible fo managing?

Customers are responsible for managing databases and customer VMs when they are using the Exadata Cloud Service. According to the Oracle documentation7, “Customers have full control over their databases running on Exadata Cloud Service, including root access for database servers.” Additionally, according to the Oracle documentation8, “Customers can create customer VMs on Exadata Cloud Service database servers for their own use.”