Payment gateway: what it is and how to choose the right one for your e-commerce
The least visible piece of technology on your site, and maybe the one that decides more than any other whether a sale closes or is lost.
When a customer clicks "pay now" on your e-commerce, a piece of infrastructure kicks in that almost nobody notices until it breaks: the payment gateway. When it works well, it's invisible. When it doesn't, it's the only thing the customer remembers about their visit. Here's what it really is, and how to choose the right one.
What a payment gateway is
The gateway is the technical bridge between your site and the banking system: it encrypts card data, sends it to the payment processor, and returns an approval or decline response within seconds.
It doesn't handle funds directly: that role belongs to the payment processor and the bank. The gateway is the secure communication layer between the two worlds.
Gateway vs processor: the difference that confuses everyone
The gateway transmits data securely. The payment processor actually processes the transaction with the card network and the bank.
Many modern providers offer both services bundled into a single platform, which simplifies management but it's worth knowing that technically they're two distinct functions.
What to evaluate when choosing a gateway
Compatibility with your e-commerce platform (WooCommerce, Magento, Shopify): a native integration requires far less technical work than a custom one.
Transaction approval rate: different gateways have different success rates on the exact same transaction, for technical reasons related to risk management.
Support for 3D Secure and strong authentication, mandatory for most European payments: a gateway that handles it poorly increases checkout abandonment.
The mistake that costs the most sales
A checkout with too many steps or a slow-responding gateway is one of the most common causes of cart abandonment in the final seconds of purchase.
Always test the gateway's real response time with test transactions, don't just trust the advertised specs.
- The gateway transmits data securely, the processor actually processes the payment.
- The approval rate varies between different gateways, even on the exact same transaction.
- A native integration with your e-commerce platform reduces development time and cost.
- Always test real response speed before choosing, not just the specs on paper.
- Confusing gateway and payment processor as if they were the same thing when comparing providers.
- Choosing a gateway without checking native compatibility with your e-commerce platform.
- Ignoring the transaction approval rate, focusing only on the fee.
Frequently asked questions
Yes, it's the standard, secure way to accept card payments on an e-commerce site. Without a certified gateway, you can't handle card data on your own in a compliant way.
Costs vary between a percentage fee per transaction, any monthly charge, and setup costs. Always compare total cost with your real volumes.
It depends on the integration level: with standard plugins for platforms like WooCommerce or Magento the switch is often quick, with custom integrations it requires more development work.
A gateway built not to lose sales
Daevon's payment gateway integrates natively with the leading e-commerce platforms, with optimised approval rates.
