What is an eCommerce payment gateway and how does it work?

eCommerce payment gateways securely capture, encrypt, and route customer payment information to processors and banks for authorisation and settlement, helping online businesses accept cards, digital wallets, and other methods. They differ from payment processors, which coordinate the transaction among merchants and financial institutions, and come in hosted, self-hosted, API-based, and local-bank-integration forms that vary in setup complexity, checkout control, security responsibility, and regional suitability. Gateways can improve security through encryption, tokenisation, fraud detection, and compliance support, while streamlined checkout options, local payment methods, and multi-currency support may reduce abandonment and support international sales. Potential drawbacks include transaction, conversion, and chargeback fees; technical outages; and limited payment-method or currency coverage. Businesses are advised to compare costs, security and PCI compliance, available payment options, integrations, scalability, and support when selecting a provider. The material presents Airwallex as a global payment and processing provider offering integrations with Shopify, WooCommerce, and Magento, more than 160 payment methods, like-for-like settlement, fraud prevention, and international regulatory licences.

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