Abstract: An edge node computing system and corresponding methods for performing secondary processing of data at edge nodes of a computer network. The edge node computing system receives messages, such as authorization messages, representing a payment transaction initiated by a cardholder with a merchant. A primary processor of the edge node computing system performs a primary processing and determines whether to forward the message to a second processor for secondary processing. After secondary processing is completed, the second processor generates an enhanced message based on the original message and the results of the secondary processing and transmits the enhanced message accordingly. The systems and methods disclosed are particularly suited for provided value-added services in payment processing networks.