Requirements of the Stripe API

Introduction to payment gateway

A payment gateway is a service through which customers transfer funds to the merchant's account by allowing a broad variety of payment methods, such as credit or debit cards. Payment gateways have made it possible to connect millions of customers and merchants where customers buy goods from online stores and pay via credit or debit cards. Contrary to what it seems, the payment gateway offers various complex services to customers and merchants. The customers and merchants interact with the payment gateway via the API provided by the service. In this lesson, we identify requirements to design the API for a payment gateway such as Stripe.

Let's start with the following functional and non-functional requirements for Stripe.

Requirements

There are many services that a payment gateway provides; however, we will limit our scope to the following functional and non-functional requirements.

Functional requirements

• Payment: The Stripe API should allow merchants to charge their customers for ...