Gain in-depth knowledge and best practices for migrating commercial data warehouses to Amazon Redshift using AWS Database Migration Service (AWS DMS) and AWS Schema Conversion Tool (AWS SCT). We use an example based on an Oracle data warehouse, and we discuss approaches to migrate it to Amazon Redshift. We also discuss some of the common challenges, limitations, and workarounds, as well as the option of using AWS Snowball to migrate very large data warehouses to Amazon Redshift.