API stands for Application Programming Interface.
API is a set of requests and responses, using which the processing platform of a payment service provider can communicate with external source (online store, mobile application, etc.).
Using API integration, an online merchant can put in place interaction between their resource and the processing system of a payment service on the so-called low server-server level.
This integration enables the seller to arrange the process of accepting payments from their buyers the way their business needs.
For example, the process can be split into several stages. Or, a merchant can create and fully control a payment page or a payment form for the buyers to enter their payment information.
Having full access to billing data, a merchant can store it for later use.
Simply put, API integration gives the seller the greatest freedom of action when accepting payments.
But choosing API integration with a payment service, the online merchant should be aware of two things:
- API is the developer’s tool. Accordingly, API integration is always associated with programming, no matter how simple the API is.
- If the Internet merchant is going to accept bank cards, they are to go through complex PCI DSS certification, to comply with the safety requirements of the payment industry, and get the right to access and handle the customer’ personal card data.
API integration is often used by very large Internet merchants with complex systems of online stores, or when for some reason there are no other options of connecting to the processing system of the payment service provider.
API of a payment service processing system should have two important properties:
- Firstly, API should give full access to all the tools and features of the platform for payment acceptance and processing.
- Secondly, the API should be simple enough so that even a novice programmer could work with it.
For example: here are formats and examples of API requests and responses of the processing platform named beGateway.