Processing An Online Transaction Involving A Payment Service Provider

摘要

A computer-implemented method for processing an online transaction involving a payment service provider includes receiving, in a backend system and from a frontend system, an initiate payment message generated by a user application for a transaction involving a payment service provider external to the frontend and backend systems. The method includes forwarding a set checkout instruction from the backend system to the payment service provider with first information about the transaction. The method includes redirecting the user application from the frontend system to the payment service provider. The method includes receiving a finalize payment instruction in the backend system from the frontend system after redirecting the user application from the frontend system. The method includes forwarding, in response to the finalize payment instruction, a perform checkout instruction from the backend system to the payment service provider with second information about the transaction.