Abstract: Systems, devices and methods that receive data indicative of a description of a product or service available for purchase from a merchant including software instructions that cause the device to perform steps for determining whether a user of the device is recognized by one or more payment processors as having an existing account with each payment processor, and wherein, when the user is identified as having an account with more than one payment processor, the software instructions cause the device to choose a payment processor from the payment processors with whom the user of the device has an account, and wherein the software instructions cause the device to present a payment processor-specific checkout element that identifies the chosen payment processor and to begin the payment process for the product or service with the chosen payment processor upon a user selection of the payment processor-specific checkout element.

Abstract: A computer-implemented is disclosed. The method includes: receiving a first payment request for a merchant transaction from a first e-commerce platform; identifying a destination gateway associated with the merchant at a second e-commerce platform; and processing the first payment request for the merchant transaction from the first e-commerce platform using the destination gateway associated with the merchant at the second e-commerce platform, the processing including: obtaining one or more data modification parameters for the destination gateway, the one or more data modification parameters stored in association with the merchant by the second e-commerce platform, generating a second payment request based on a data payload associated with the first payment request and the one or more modification parameters for the destination gateway, and sending the second payment request to the destination gateway.

Abstract: Systems, devices and methods that receive data indicative of a description of a product or service available for purchase from a merchant including software instructions that cause the device to perform steps for determining whether a user of the device is recognized by one or more payment processors as having an existing account with each payment processor, and wherein, when the user is identified as having an account with more than one payment processor, the software instructions cause the device to choose a payment processor from the payment processors with whom the user of the device has an account, and wherein the software instructions cause the device to present a payment processor-specific checkout element that identifies the chosen payment processor and to begin the payment process for the product or service with the chosen payment processor upon a user selection of the payment processor-specific checkout element.