This 9-minute screencast demonstrates how to configure and utilize Drush 9 aliases with DDEV and Pantheon.
The user is guided through the process of downloading the aliases file from the Pantheon Dashboard, moving them to the proper location in the project directory, converting them to Drush 9 format, making a small tweak to ensure they are Pantheon-compatible, configuring DDEV to have access to the user's local SSH keys, then demonstrating a remote alias' usage.
This screencast is part of the 12 week, 3x/week, live instructor, online Drupal Career Online program.