https://securitysenses.com/posts/smart-routing-payment-systems-how-it-boosts-acceptance-rate Every declined transaction is lost revenue. Industry data consistently shows that online merchants lose a meaningful share of potential transactions to technical processor declines, incorrect routing, or individual acquirer limits - losses entirely unrelated to customer intent or card validity. Smart routing is the architectural solution that addresses this systematically. A declined transaction is not a customer saying no. It is your payment infrastructure saying it cannot handle the request - a fixable engineering problem.