Version 21c of the Oracle database is the version by which Oracle cuts off old heads and says goodbye to the classic architecture, also known as the non-CDB architecture. Now there are only container databases, and 21c brings with it some new features. New features include better integration into Oracle Cluster, improved isolation of Pluggable databases, extended flashback and recovery opportunities. The presentation provides an overview of the new features and shows the current migration methods you can use to migrate to the container database architecture.