Exadata Cloud at Customer is a service delivering a public cloud model in your data center, under your control, that conforms to regulatory, privacy, legal, and business requirements.
Cloud at Customer :
-> optimizes Oracle Exadata and Oracle Database software
-> increases productivity and reduces operating costs because you don’t have to build up more specialized skills for Exadata systems
-> comes with the same PaaS and IaaS software, same updates as Oracle Cloud and same cost-effective subscription pricing model as Oracle Cloud Instances.