A gateway connects your checkout to payment processing
The gateway receives the checkout payment and exchanges information with the processor. Your ecommerce platform still owns the order. Keep an order ID and a gateway reference linked so support and finance can find the same transaction in both places.
Compatibility has more than one dependency
Check whether the gateway connects to the approved processor, whether the storefront supports the integration, and which payment methods are enabled for your account. Confirm who supports each part before investing development time.
Walk through a transaction with the vendor
Give the vendor a sample order ID and ask it to demonstrate checkout approval, capture, a partial refund, and a settlement entry in the proposed configuration. Request the fields your team can export without exposing card data. Check which system answers buyer questions if the order and payment records temporarily disagree.
Compare gateway features by actual workflow
- Sandbox access and documentation for an approved, declined, and canceled payment.
- Capture timing, partial refunds, settlement reports, and status notifications.
- Stored payment methods and a migration plan if the gateway changes.
- Checkout ownership, payment data scope, and the provider’s support coverage.
Sources and further reading
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