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

Magento_PersistentHistory

Magento\PersistentHistory module extends functionality of Magento\Persistent by providing ability to keep track of products added to wishlist, recently ordered items, currently compared products, comparison history, recently viewed products and customer group membership and segmentation.