As we will see in a bit, Drupal stores configuration data in the database (for performance reasons), but it makes it all exportable to YAML files. So, a typical flow for managing it will have you perform changes in the UI, export the configuration, add it into Git, and deploy the code upstream to the next environment. There, it's just a matter of importing what is in code.
The import, export, and synchronization can be done both via Drush and through the UI at admin/config/development/configuration.
The typical flow is for the active site configuration to be synchronized with the one in the YAML files. This means importing ...
