When 3B+ Coupons Hit the Network: How One Mass Push Exposed POS Redemption Fragility

https://future-wiki.win/index.php/Why_$169/mo_Matters:_API-First_Couponing_vs_Legacy_Tools_for_Retail_Tech_Leaders

How 3 billion coupon deliveries expose real-world limits in POS ecosystems The data suggests that large-scale coupon campaigns are not just a marketing event - they are a systems stress test