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Payment Routing Meaning

Payment routing is the logic-driven process of selecting the most efficient path for a financial transaction to travel from the sender to the receiver. In traditional finance, this involves navigating a web of intermediary correspondent banks. If you send money from a small bank in Italy to a small bank in Japan, the funds might hop through major hubs in London or New York.

Each hop adds latency and fees, making the routing path a major factor in the final cost of the transfer.In the world of decentralized finance (DeFi) and decentralized exchanges (DEXs), payment routing is handled by aggregators. If a user wants to swap a rare altcoin for a stablecoin, there might not be a direct liquidity pool for that pair.

The router will automatically find the cheapest multi-step path across different protocols to minimize slippage and gas fees, often executing the entire sequence in a single atomic transaction.For Layer 2 solutions like the Lightning Network, routing is a peer-to-peer challenge. Because Lightning relies on interconnected payment channels, a payment must find a continuous path of liquid channels to reach its destination.

Nodes use a gossip protocol to share information about the network's topology. The routing logic must balance finding a path with enough capacity while minimizing the routing fees charged by the nodes in the middle.The next generation of payment routing is payment orchestration.

This allows global merchants to dynamically route credit card transactions to different acquiring banks based on the customer’s country. By routing a UK customer's payment to a UK bank rather than a US one, the merchant can avoid cross-border fees and significantly increase the authorization rate, ensuring that fewer legitimate transactions are flagged as fraud by the issuing bank.

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