Payments glossary
Smart routing
Smart routing automatically sends each transaction down the processing path most likely to succeed, choosing between acquirers or providers based on card type, issuer behaviour, cost and historical approval rates - and can retry a declined payment along an alternative route.
How smart routing decides
Before a payment goes out for authorisation, the routing layer looks at what it knows: the card's issuing bank and country, whether it is debit or credit, the currency, each available acquirer's recent approval rates for similar traffic, the fees on each path, and whether any connection is degraded right now. A rule set or model picks the route; if the first attempt fails for a retryable reason, the payment can be re-presented through an alternative acquirer rather than dying at the first decline.
What smart routing changes
The same transaction can be approved through one acquirer and declined through another, because issuers respond differently to different acquiring paths - domestic routes in particular tend to be treated more favourably than cross-border ones. Routing to the stronger path lifts approval rates, which is revenue recovered without touching the checkout. It also buys resilience, keeping payments flowing through an outage, and cost control, steering traffic to cheaper routes where outcomes are equal.
The honest caveat
Smart routing needs somewhere to route to. A merchant with a single acquirer and one gateway has no alternatives to choose between - the benefit arrives with multiple acquiring connections, which is why routing is usually discussed together with payment orchestration.
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