PHP 7.3 reaches end of support in December 2021 and Adobe Commerce 2.3.x reaches end of support in April 2022. You may want to consider planning your upgrade now to Adobe Commerce 2.4.x and PHP 7.4.x to help maintain PCI compliance.

Configuration files

Magento provides configuration files that enable you to easily customize a component. We also enable you to create new configuration types to extend default functionality.

See the following topics for details: