Here are some key points on how schema changes are handled:
DDL statements, such as CREATE TABLE, ALTER TABLE, DROP TABLE and so on are automatically replicated from Aurora to Amazon Redshift.
The integration makes the necessary checks and adjustments in Amazon Redshift tables for replicated schema changes. For example, adding a column in Aurora will add the column in Amazon Redshift.
The replication and schema changes automatically happen in real time with minimal lag between source and target databases.
Schema consistency is maintained even as DML changes occur in parallel to DDL changes.