The Payment Provider Gateway documentation uses the Magento 2.3.x version of the Braintree module as a reference application. The Braintree module was removed in Magento 2.4.0. The concepts described in this guide are still applicable to Magento 2.4.0, but the code samples are not supported.
Payments Integrations
Magento payment provider gateway is a mechanism that allows you to integrate your stores with payment service providers. As a result, you can create and handle transactions based on order details.
This guide describes how the Magento payment provider gateway is implemented and how you can add custom integration with payment providers and add vault payments.
The chapters of this guide are: