Oracle Database 21c, the new release of the longtime industry leading RDBMS, is currently available in the Oracle Cloud, where it can be deployed as a Virtual Machine DB System (for clusters and single instance) or a Bare Metal DB System (single instance). It’s also available in the Autonomous Database Free Tier Service, with limited storage and CPU capacity. It will be available more broadly later this year, including on-premises.
While Oracle Database 20c was scheduled for release in 2020, that release was cancelled because of the COVID-19 pandemic and its effect on customer IT departments. All of the features planned for 20c were rolled into 21c.