Configuration management is Drupal’s system for exporting, importing, and version controlling site configuration. It lets you move changes like content types, views, and field definitions between environments cleanly.
Configuration is stored as YAML files. You export current config with drush cex, commit the resulting files to Git, and import them on another environment with drush cim.
This replaces the older workflow of manually recreating configuration on production, which was error prone and slow. With proper config management, your configuration lives in version control alongside your code, making deployments predictable and repeatable. Some sites also use Config Split to manage environment specific configuration, like having different settings on development versus production. Mastering config management is essential for professional Drupal work. It is how you keep multiple environments in sync reliably.