{"id":6330,"date":"2023-07-06T12:37:09","date_gmt":"2023-07-06T12:37:09","guid":{"rendered":"https:\/\/djangostars.com\/blog\/?p=6330"},"modified":"2025-08-14T16:16:57","modified_gmt":"2025-08-14T16:16:57","slug":"payment-gateway-integration-for-product","status":"publish","type":"post","link":"https:\/\/djangostars.com\/blog\/payment-gateway-integration-for-product\/","title":{"rendered":"Payment Gateway Integration Guide: Examples, Benefits, and Challenges _"},"content":{"rendered":"

Doing business online today is nearly impossible without payment gateway integration. Whether selling products through an eCommerce website or delivering digital business services like fintech, logistics, or catering, companies want customers to pay, and the latter want an easy way to do it.<\/p>\n

Yet, in our experience, mobile payment gateway integration considerations are sometimes way down the list of priorities for our client companies. In fact, a good understanding of how to integrate a payment gateway and the options available can make all the difference when businesses are discussing development with a vendor.<\/p>\n

As a fintech software development company<\/a>, we’ve been following and implementing payment gateway technologies since 2008. And we\u2019ve been doing it well, as our logistics and other projects show. One of them is Azyan \u2014 a Jordanian food delivery service with a 20-minute delivery time that allows paying in cash on delivery or with Visa\/Mastercard cards via a web app.<\/p>\n

In this article, we use our experience to explain the different types of payment gateway available and how to use the payment gateway within an app, platform, or website, using examples from Django Stars projects. We also provide a step-by-step guide for enabling Stripe payment processing or PayPal integration and discuss the challenges businesses can meet along the way.
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Payment Gateway Integration: The Basics<\/h2>\n

The main goal of payment gateway integration for a product is to enable payment processing through channels (like PayPal and Stripe) and credit card networks (such as Visa, MasterCard, AmEx, etc.). The benefits of payment gateway integration in mobile applications include faster and smoother billing, secure payments, and regulatory compliance.<\/p>\n

When a business decides to add a payment gateway in the app, the flow is simple:<\/p>\n

    \n
  1. The customer selects their preferred means of payment.<\/li>\n
  2. They enter their credit card or PayPal details.<\/li>\n
  3. They confirm and finalize the purchase.<\/li>\n<\/ol>\n

    However, much more goes under the integrated payment processing hood:
    \n\"How<\/p>\n

      \n
    1. The customer proceeds to checkout and provides their payment details on the website or in the app.<\/li>\n
    2. The merchant website transmits the transaction data to the payment gateway via an API.<\/li>\n
    3. The payment gateway transmits the data to the payment processor in an encrypted form.<\/li>\n
    4. The payment processor sends the encrypted data to the card network for verification and validation.<\/li>\n
    5. The credit card network contacts the issuer bank with a request for payment which can be approved (if there are enough funds in the account) or denied (due to lack of funds or other reasons).<\/li>\n
    6. If the payment goes through, the customer gets notified, and the sum is transferred to the company\u2019s bank account. If the payment is canceled, both parties are notified of the failed payment attempt.<\/li>\n<\/ol>\n

      Still, no payment processors are universal \u2014 for example, Alipay and WeChat are only popular in China, and PayPal is not available in all countries worldwide. As a result, combining several processors to meet all customer needs is a sound business strategy. For more on this, see our post on how to choose a payment gateway.<\/p>\n

      It\u2019s time to take a closer look at how to integrate a payment gateway to enable online payments.<\/p>\n

      Steps to Integrating a Payment Gateway in a Product, Website, or App<\/h2>\n

      Payment gateway integration isn\u2019t just for startups. At Django, we\u2019ve also helped established companies with payment gateway integration in eCommerce, fintech, logistics, home loans, and other industries. Sometimes clients need a website or product revamp after a merger or acquisition; at other times, we\u2019ve reworked a checkout process to increase conversion rates. After all, with 68% of customers abandoning carts due to poor checkout experience<\/a>, an updated payment gateway can significantly improve customer experience and boost sales.
      \n\"Payment
      \nHere\u2019s a model step-by-step payment gateway integration process, with the challenges and solutions businesses can face at each step.<\/p>\n

      1. Forming requirements<\/h3>\n

      Payment gateway requirements will be influenced by factors such as the company\u2019s business model, target audience, and existing IT infrastructure.<\/p>\n

      More specifically, requirements will take these things into consideration:<\/p>\n

        \n
      1. The most popular customer payment methods<\/b>. Integrating an excessive number of payment options along with cryptocurrency will cost a fortune in monthly subscription fees, so only the most essential payment methods should be covered.<\/li>\n
      2. Customer segmentation by location<\/b>. Some payment options are more popular within specific customer groups: WeChat, UnionPay, and Alipay in China; iDEAL or Maestro in the Netherlands; AmEx in the US, etc.<\/li>\n
      3. Continuity of the checkout flow<\/b>. Some payment options are integrated with a website, while others (such as PayPal) will take clients to an external page. We\u2019ll talk more about the types of payment gateway below.<\/li>\n
      4. Data security requirements<\/b>. Some payment gateways store customer data in encrypted form, some store only hash data, and some store nothing. Hackers can launch man-in-the-middle attacks to capture customer card details during checkout, so ensuring secure data transfer (or delegating the task to a trusted payment processor) is essential.<\/li>\n
      5. Required transaction volume<\/b>. There\u2019s a big difference in transaction processing costs for 150 or 25,000 transactions daily. The right payment gateway should offer appropriate pricing for the anticipated transaction volume.<\/li>\n
      6. Transaction processing speed<\/b>. Low checkout speed is among the biggest reasons for cart abandonment, so fast transaction processing is a must.<\/li>\n
      7. Regulatory compliance<\/b>. Transactions involving financial details and transferring funds will need to comply with security regulations such as PCI DSS<\/a>, PSD2<\/a>, and the GDPR<\/a>.<\/li>\n<\/ol>\n

        All of these considerations help shape the requirements for payment gateway integration in eCommerce, logistics, and any other domain. Once these details are clarified, it\u2019s time to plan the integration.<\/p>\n

        2. Planning the integration<\/h3>\n

        The findings from the first phase are used to determine the roadmap and budget of a payment gateway integration in a mobile application or website. Since requirements vary, no two payment provider integration projects are the same.<\/p>\n

        For example, the Azyan solution needed to support both English (a left-to-right interface) and Arabic (right-to-left). It also had to integrate with McDonald\u2019s and Carrefour platforms; provide smooth access for admins, drivers, and clients in both languages; and enable customers to pay with cash on delivery or online with a credit\/debit card.
        \n\"Azyan.
        \nThe Azyan delivery platform is highly scalable and supports easy onboarding of new restaurants due to clean APIs, as well as highly accurate delivery with Google Maps coordinates. All of this is possible thanks to in-depth feature and integration planning, including payment service provider integration.<\/p>\n

        3. Selecting the tech stack<\/h3>\n

        Supporting multiple payment methods is a wise decision, but some underlying tools and frameworks might not be able to work with a product from the get-go. The solution is to build integration software to connect disparate software tools into a cohesive system \u2014 which is where vendor expertise pays off.<\/p>\n

        4. Designing the customer journey<\/h3>\n

        Inconsistent customer experience, bad checkout process design, and slow order processing time all affect conversion<\/a>.
        \n\"Reasons
        \nTherefore, it makes sense to reduce the number of steps and clicks a customer must perform to place an order. Research shows that         reducing the number<\/a> of actions and form fields in the checkout flow from 24 to 12 ensured a 35% increase in conversion rate.<\/p>\n

        5. Implementing and testing the payment gateway<\/h3>\n

        The final stages are implementing the design and beta-testing the payment gateway integration for a product or mobile app before release. Focus groups can help pinpoint possible flaws and minimize the risk of customers being disappointed with the checkout process.<\/p>\n

        There are several types of payment gateway integration.<\/p>\n

        Redirection (hosted gateway)<\/h4>\n

        A checkout page might redirect to the payment processor\u2019s page, where the customer submits the payment details and finalizes the purchase. This is the PayPal approach, and it\u2019s also used by many smaller market players.<\/p>\n

        The benefit here is that the responsibility for secure transaction handling lies with the payment service provider (or PSP). The downside is that it adds another step to the checkout process and might be confusing for some customers.<\/p>\n

        API access (integrated gateway)<\/h4>\n

        This method gives a business maximum control over customer data in terms of performance analytics, personalization, and product improvement. However, the business also has to ensure watertight cybersecurity measures to protect themselves from man-in-the-middle attacks and schemes such as carding, phishing, new account fraud, and card-not-present fraud.<\/p>\n

        Built-in (iFrame) checkout<\/h4>\n

        This payment gateway integration method uses an inline frame, so the checkout form is generated as an HTML element on the checkout page.<\/p>\n

        A built-in checkout ensures branding and styling consistency and gives a good degree of control over the checkout process. The downside is the significant effort required to prevent cross-site scripting attacks and other fraudulent activities, as the merchant is held liable for any data breach that occurs with this payment processing approach.<\/p>\n

        Selecting the most appropriate payment integration method maximizes the benefits it brings to a business. However, any solution will have its limitations.<\/p>\n

        Payment Gateway Limitations<\/h2>\n

        There are inherent limitations for all types of payment gateway integration, including the following:<\/p>\n