Ever wondered how online payments actually work behind the scenes? A payment processor is responsible for handling transactions by communicating with card networks (Visa, Mastercard), banks, and external gateways. In a distributed microservices architecture, services like the Payment Service, Account Service, and Transaction Service work together to verify balances, initiate transactions, handle currency conversions, ensure compliance, and manage distributed transactions.
At scale, additional services like Fraud Detection and User Service enhance security and reliability. Watch this video to understand how modern payment systems process transactions efficiently.
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