Amazon RDS Blue/Green Deployments enable safer, simpler, and faster database updates for Aurora MySQL, RDS MySQL, and RDS MariaDB. This feature allows for major/minor version upgrades, schema changes, and maintenance updates with minimal downtime. The video demonstrates how to create and manage Blue/Green deployments, including the switchover process that can be completed in as little as one minute with zero data loss. It also covers pricing considerations and showcases a live demo of upgrading a MySQL 5.7 instance to version 8.0 using this new capability.