Payment Gateway Models and Business Strategies : Fintech

Identify the key parties in a payment gateway transaction, including customers, merchants, payment service providers, acquiring and issuer banks, card schemes, and PCI DSS and EMV security standards.

Learn the four building blocks of digital payments—on-us and off-us transactions, card present and not present—and how banks, gateways, and card schemes determine settlement, pricing, and risk.

Explore the transaction flow of a payment gateway in e-commerce, covering the three-tier presentation, application, and database layers, and the roles of acquiring banks, card schemes, and issuing banks.

Explore five payment gateway integration models in e-commerce: proprietary, merchant managed, direct post, inline frames, and third-party hosted payment page. The lecture outlines each model and its implications.

Learn about proprietary or custom-developed payment integration, where the merchant hosts the payment system, collects customer and payment data, encrypts it, and transmits it to the gateway for processing.

Examine the merchant-managed payment model, where cardholder data bypasses the merchant and goes directly to the payment gateway; the gateway processes the transaction and returns a reference for merchant reconciliation.

Understand the third party with direct post integration, where a middleman service provider handles cardholder data and processing before routing to the payment gateway and delivering status to the merchant.

Explore third-party inline frames (iframe) that embed a payment gateway within a merchant site. Customers enter details in the iframe while the provider handles security and branding.

Explore third-party hosted payment pages that route customers to a service provider’s secure page, enabling delayed or mobile payment via sms links, with order and payment timing as distinct phases.

Learn the difference between chargeback and refund, who initiates each, and how cardholder disputes including friendly fraud protect customers and merchants.

Explore processing, clearing, and settlement in digital payments. Learn how authentication, authorization, and batch settlement flow across issuers, acquirers, and gateways.

Understand the fund settlement flow across merchant, gateway, acquiring bank, card schemes, and issuer banks, and how net settlement amounts and daily processing determine payouts.

Learn critical evaluation factors for selecting a payment gateway, including uptime, security certifications, settlement timings, MDR, tool support, refunds, platform compatibility, and effective negotiation with acquiring banks.

Explore key risks in payment gateway business, including data breaches, inadequate encryption, and weak two-factor authentication, and learn strategies to mitigate downtime, liquidity, and chargeback challenges.

Explore verified by Visa and Mastercard secure code, three-domain security for online payments, and the registration and OTP methods that prevent fraud and chargebacks.

Explore strategies and pricing in the payment gateway business, including multi-acquirer setups, MDR and merchant category codes, and how settlement terms and commissions shape merchant outcomes.