Integrating Payment Gateways in Your App

A guide to integrating popular payment platforms like Stripe and Razorpay into your web or mobile application.

Accepting payments is a critical feature for most e-commerce and SaaS applications. Integrating a payment gateway like Stripe or Razorpay can seem daunting, but modern platforms have made the process relatively straightforward. The typical workflow involves both frontend and backend development. On the frontend, you use the gateway's provided library (e.g., Stripe.js) to securely collect payment information. This information is tokenized, meaning the sensitive card details are never sent to your server. This token is then sent to your backend. On the server, you use the gateway's API with your secret key to create a "charge" or "payment intent" using the token. It's crucial to handle this server-side to protect your secret keys. Most gateways also provide webhooks, which are HTTP callbacks that notify your application of events, such as a successful payment or a failed charge, allowing you to update your database and notify the user accordingly.

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