Scaling a high-volume merchant operation across European markets used to mean one thing: more integrations. A new acquirer for Germany. A separate connector for iDEAL in the Netherlands. Another for Klarna. Another for Apple Pay. Each one carries its own SDK, settlement format, decline codes, and on-call rotation. topropay replaces that fragmented stack with a single endpoint that scores, routes, and cascades every transaction across more than 300 connectors. For teams that want to look under the hood at how each authorization is evaluated, the smart routing and cascading engine page walks through the decision logic in detail.
The pattern is showing up across e-commerce, subscriptions, travel, and DTC retail: merchants who once treated payment infrastructure as a finished project are quietly rebuilding it on top of orchestration. Here is why.
The integration tax that quietly bleeds revenue
For a merchant processing meaningful volume, the math on direct PSP integrations stops working at a certain scale. Every new acquirer adds:
- A separate SDK or API contract to maintain
- A new webhook format to normalize
- A different reconciliation file layout
- Its own approval-rate quirks per BIN, currency, and 3DS outcome
- Compliance updates shipped on someone else’s schedule
A merchant operating in five EU countries with three acquirers and a handful of local payment methods can end up with engineering committing more time to keeping the plumbing alive than to anything customers see. And every soft decline — the kind triggered by an issuer that would have approved the same card on a different acquirer — disappears as silent lost revenue.
topropay was built specifically to remove that tax.
One endpoint, every acquirer
The mechanic is simple from an engineering point of view. Instead of integrating with each PSP, your checkout sends one normalized request to POST /v1/payments. topropay scores the connected acquirers in real time, picks the path most likely to clear, and returns one reconciled result. If the first acquirer declines, the cascade engine retries against the next-best one — automatically, server-side, before the shopper ever sees a failure.
What you ship:
- One API request per payment
- One webhook format for every event
- One reconciliation feed across every connector
- One dashboard for routing rules, reporting, and disputes
What you no longer ship:
- PSP-specific SDKs
- Per-acquirer error handling
- Custom retry logic
- Settlement file parsers for each provider
That collapse from “n integrations” to “one integration” is what most teams cite as the immediate reason for moving to topropay.
What 300+ connectors actually covers
The connector count is not a marketing number — it is the working surface area of the network. Across the topropay catalog you will find:
- Card schemes: Visa, Mastercard, American Express, Cartes Bancaires
- Acquirers and PSPs: Adyen, Worldpay, Checkout.com, Stripe, Nuvei, Worldline, Nexi, and others
- Local European payment methods: iDEAL, Bancontact, BLIK, Przelewy24, Sofort, Giropay, Multibanco, Trustly, SEPA Direct Debit
- Buy now, pay later: Klarna and equivalents
- Digital wallets: Apple Pay, Google Pay, PayPal
Crucially, you keep your existing acquirer contracts. topropay is not a PSP — it is the orchestration layer that sits above whichever acquirers and methods you already use, plus everything in the network you have not connected yet. New connectors are added on request without any change to your integration.
The numbers behind the switch
The reason orchestration is having a moment is not theoretical — it is measurable. topropay publishes the figures finance and engineering teams actually watch:
- +12% approval uplift — typical lift once smart routing chooses the strongest path per transaction
- 38% of soft declines recovered — retried and cleared automatically through cascading
- 47ms routing decision — real-time scoring per request, not a perceptible delay at checkout
- 99.99% platform uptime
- 300+ live connectors reachable through a single integration
For a merchant doing eight or nine figures in annual GMV, a 12% authorization lift maps directly onto recovered revenue that previously was not showing up anywhere on the P&L.
Routing as policy, not code
One of the quieter advantages of topropay is that routing logic lives in the dashboard, not in your codebase. Rules are expressed declaratively — by BIN range, MCC, currency, amount, card brand, 3DS outcome, live per-acquirer approval rate — and edits take effect on the next transaction. No release, no redeploy.
In practice, that means a payments lead can ship a change like “route all EUR transactions above €500 to acquirer 02” in a few minutes, instead of opening a ticket and waiting on the next sprint. The team running revenue gets back the iteration speed normally reserved for product surfaces.
Compliance handled below the stack
The other thing that quietly drives merchants to topropay is regulatory exposure. PSD2, 3DS2, PCI DSS — each one is a project on its own if you absorb it directly. topropay handles them as infrastructure:
- SCA with exemptions: TRA, low-value, and trusted-beneficiary checks evaluated in real time
- 3DS2 routing: each authentication request goes to the issuer ACS with the highest historical success rate for that card range
- PCI scope reduction: card data is tokenized the moment it reaches the topropay vault, so PANs never touch your servers and audit scope shrinks accordingly
topropay holds PCI DSS Level 2 certification, which is the baseline most enterprise procurement teams look for before they will sign.
Who is switching, and why now
The merchants moving to topropay tend to share a profile:
- High transaction volume and meaningful soft-decline losses
- Active in multiple EU markets, or planning expansion
- Some combination of cards plus several local payment methods
- An engineering team that would rather build product than maintain PSP plumbing
- A finance team that wants one reconciled ledger, not eight
Subscription businesses care most about authorization recovery on recurring rebills. Travel and hospitality operators care about cross-border approval and refund flows. DTC retail cares about wallet coverage and conversion at checkout. The common thread: orchestration delivers all of those without forcing a stack rebuild.
The takeaway
The shift from direct PSP integrations to a single orchestration layer is following the same curve as other infrastructure shifts — once the math works for one merchant in a category, the rest tend to follow within a quarter or two. topropay is positioned as the EU-focused option for that move: one API, more than 300 connectors, measurable approval uplift, and compliance handled as infrastructure rather than as a project.
If you are seeing soft declines that you suspect would clear on a different acquirer, or your engineering team is quoting weeks of work for what should be a payment-method toggle, a discovery call with the topropay team is a low-cost way to model the upside before committing to anything.
Caroline is doing her graduation in IT from the University of South California but keens to work as a freelance blogger. She loves to write on the latest information about IoT, technology, and business. She has innovative ideas and shares her experience with her readers.
