# Rocketfuel payment solution workflow

The RKFL provides a complete payment solution through various open-source plugins, an iFrame to integrate at the merchant's website, and an RKFL-hosted checkout page.

The merchant who wants to design their own custom user experience similar to the RKFL features can use the RKFL's APIs to do the same.

The RKFL payment solution integrates through a sequence of API calls. In the API reference section, there are details of all the required APIs. 

The below diagram shows a sequential workflow of the complete payment solution that help to understand the API calls.

![](/files/tpdEB4rdbsg2MdlDflAX)


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