To integrate real-time point earning from an external eCommerce system into Salesforce Loyalty Management, utilizing an AppExchange app can be an efficient solution. These apps are designed to bridge Salesforce with external systems, enabling seamless data exchange. When a Loyalty Program Member makes a purchase on the eCommerce platform, the app can facilitate the automatic creation of 'Transaction Journals' in Salesforce, reflecting the earned points in real-time. This approach minimizes the need for custom development, leveraging pre-built solutions to enhance the loyalty experience and maintain accurate, up-to-date member point balances.