Oracle Database can be deployed on Cloud under OCI Classic (OCI) and OCI.
Deploying Database on OCI is much better because of all the features in OCI.
Database on OCI can be on top of Bare Metal (BM) , Virtual Machine (VM), Exadata Cloud , Autonomous Transaction Process (ATP), or Autonomous Dataware House Cloud) ADWC. Check all this at https://k21academy.com/oci16 and learn about:
✔What is Database Service in OCI
✔User-Managed Database Choices in OCI
✔Supported Database Editions & Versions On OCI & much more…
Oracle ACE, Author, Speaker and Founder of K21 Technologies & K21 Academy : Oracle Gold Partner specialising in Design, Implement, and Trainings.