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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.
Magento_Downloadable module introduces new product type in the Magento application called Downloadable Product.
This module is designed to extend existing functionality of Magento_Catalog module by adding new product type.