This is a prestashop module that gives you the ability to automatically categorize customers into groups with a specific discount based on the customer's total purchase value. The addon has features to personalize the process and inform customers about their discounts.
Info: https://mypresta.eu/modules/advertising-and-marketing/cumulative-discounts.html
The main feature of this module is the ability to automatically provide discounts to your customers. In this module you can configure thresholds for cumulative discounts. Simply put, when a customer spends X in your store, you can provide a Y% discount on your entire product catalog. When a customer reaches a certain purchase amount, it will be automatically assigned to a group of customers with a certain discount.