Use environment variables for configuration in Magento

Environment variables are values that are set on the operating system and stored outside of the application. They are name-value pairs that work very similarly to regular variables.

Environment variables provide the highest level of configuration precedence in Magento. They let you define configuration values at the system level, overriding every other setting.

To use environment variables with Magento, you need to understand the specific naming convention that maps to Magento's configuration paths.

The convention follows the same pattern used in Magento’s configuration patterns, but using...