What Is a Payment Gateway?
A payment gateway is technology that securely transmits transaction data between a merchant's website and the payment processor or acquiring bank, enabling online card payments.
Direct Answer
A payment gateway is technology that securely transmits transaction data between a merchant's website and the payment processor or acquiring bank, enabling online card payments.
Direct Answer
A payment gateway is the technology that securely transmits transaction data between a merchant's website (or app) and the payment processor or acquiring bank. For online businesses, it plays a role similar to a physical card terminal: it captures payment details, encrypts them, routes the transaction for authorization, and returns the approval or decline response.
How It Works
When a customer submits payment online, the gateway encrypts the card data and sends an authorization request to the processor, which routes it to the card network and issuing bank. The issuer approves or declines the request, and the gateway relays the response back to the merchant's site. Once the order is fulfilled or the goods are delivered, the merchant captures the transaction and the gateway facilitates settlement.
Key Points
- A gateway handles encryption, authorization, and response routing — it does not hold funds.
- Many gateways include fraud screening, tokenization, and recurring-billing support.
- Gateways connect to your ecommerce platform, shopping cart, or custom integration via an API.
- Some processors bundle a gateway; others allow you to use a third-party gateway.
What Merchants Should Know
Choose a gateway that integrates with your ecommerce platform and supports the payment methods your customers use. Look for built-in fraud tools (AVS, CVV, 3-D Secure) and tokenization to reduce your PCI scope. A reliable gateway with high uptime directly affects your conversion rate.
