The video tutorial explores two methods for migrating PostgreSQL databases from DigitalOcean to AWS. The first method uses native PostgreSQL CLI tools (pg_dump and pg_restore) for smaller databases. The second method employs AWS Database Migration Service (DMS) for larger databases, allowing for a seamless transition with minimal downtime. Key steps in the DMS process include creating replication instances, setting up endpoints, and configuring migration tasks. The video is divided into chapters covering both migration methods.