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.
CheckoutAgreements
Magento\CheckoutAgreements module provides the ability add web store agreement that customers must accept before purchasing products from store. The customer will need to accept the terms and conditions in the Order Review section of the checkout process to be able to place an order if Terms and Conditions functionality is enabled.