How Grand Cru Concepts built a multi-market payment stack without extra engineering

About the client

Grand Cru Concepts is a software publisher specialising in innovative digital entertainment platforms. Operating internationally, the company builds and manages high-volume consumer products with complex payment and payout requirements, processing transactions across multiple providers and markets at scale.

Client's payment setup before Corefy

When Grand Cru Concepts came to Corefy in early 2025, they had an active payment integration with their primary payment processor. Several more providers were under consideration, with merchant IDs in progress — but none were yet connected, and there was no unified layer to bring them together.

The challenge: disconnected providers, locked payouts, slow expansion

With one active integration and several more providers waiting to be connected, there was no routing layer, no unified dashboard, and no way to scale the stack without custom engineering work per provider. Card payouts had to be matched to the same PSP that originally processed the deposit, limiting flexibility as volumes grew. And every new payment method required custom development work for each provider.

Grand Cru Concepts needed to move quickly; their goal was to start testing and going live as fast as possible without spending months in an integration build cycle.

Three things had to happen:

• The primary payment processor needed to be connected to Corefy for both pay-in and payout — neither integration existed yet, and both had to be built.
• Apple Pay and Google Pay needed to be activated as part of the new provider setup.
• The payout architecture had to be designed so that future payouts would not be locked to the deposit PSP as the provider stack grew.

The task was straightforward: add new providers and payment methods without rebuilding the integration each time. Every custom engineering effort was time and cost that the team needed to redirect towards the product itself.

Building the unified payment layer with Corefy

The implementation started with activating the integrations Grand Cru Concepts already had. In parallel, our integration team built new connections for card payments and APMs specifically for this deployment, including PayNearMe, Worldpay, Rapyd, Muchbetter, Masspay, Alphapo, and Cryptopay.

The architecture underpinning all of this is deliberately simple on the client's side. After launch, Grand Cru Concepts used Corefy's checkout⁠, which enabled them to go live faster without building a custom payment interface up front. Corefy handles routing, card data collection via a hosted payment page, tokenisation, and callbacks — the client's engineering team never touches raw card data. Their own payment method selection interface came later, once the core stack was stable.

Beyond the platform itself, Corefy has also helped Grand Cru Concepts navigate the provider landscape by making introductions to vetted payment providers relevant to their markets. And because Corefy's routing keeps providers and payment methods separated by geography, adding a market-specific provider doesn't affect the rest of the stack — each region gets the right coverage without cross-contamination between routes.

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A payout model that isn't locked to the deposit PSP

The redemption architecture required particular attention. Previously, to return funds to a user, the client had to route the payout through the same provider that originally processed their deposit. That was a rigid constraint that limited flexibility and made provider diversification harder.

With Corefy, the flow works differently. When a user verifies their card via Corefy's hosted payment page, our system issues a card token. Future payouts are sent using that token. Corefy retrieves the full card data and routes the payout to whichever provider is available in the routing scheme, not necessarily the original deposit PSP.

If a user needs to update their payout card, Corefy's verify flow handles it — the user submits their new card details via the hosted payment page, a new token is issued, and the future payouts go to the updated card without requiring a new deposit.

That flexibility extends beyond payouts. Grand Cru Concepts wrote their payment integration once, and every provider added since has followed the same pattern: connect credentials in the Corefy dashboard⁠, configure routing, and go live. When a new provider was added post-launch, no integration work was required on the client's side. The same will be true for every provider that follows.

One year in: stable providers, 79% approval rate, and an expanding pipeline

Over a year after go-live, Grand Cru Concepts operates its entire payment stack across multiple providers and payment methods from a single interface. What previously required navigating separate provider dashboards, managing isolated routing logic, and building custom code for each new integration now runs through one place.

The team monitors activity, reviews transactions, and coordinates with providers without switching between systems. Payouts⁠, which were previously constrained by which PSP processed the original deposit, now route flexibly across the available provider stack.

Having a single interface for payments and payouts has made day-to-day management significantly more efficient. Our team can monitor activity, review transactions, and coordinate with providers without needing to navigate multiple systems.

Karla Gomez, Head of Payments, Grand Cru Concepts

On the performance side, all active providers are running stably, across the US and Canada — markets that were onboarded incrementally, with Canada added after the initial US launch. As of May 2026, the overall approval rate is 79% across the stack, with no declines attributable to platform instability. The payment mix has grown considerably since launch: accepted methods now include payment cards, ACH, Google Pay, Interac e-Transfer, and crypto for both pay-in and payout, with recurring billing also live for subscriptions. The routing layer is doing its job, and any further optimisation has a clear target.

Payment routing has provided additional flexibility in managing providers and payment methods. The platform makes it easier to configure and optimise payment flows while maintaining visibility into transaction performance.

Karla Gomez, Head of Payments, Grand Cru Concepts

What's next: the platform that scales without re-engineering

Just over a year after launch, the provider stack has grown steadily. Canada was brought on board in autumn 2025, and crypto payments went live just weeks ago, both following the same pattern: connect credentials, configure routing, go live. No new integration builds, no additional engineering overhead on the client side.

The architecture Grand Cru Concepts set up in March 2025 is the same one carrying their growth today, and it's built to keep going.

Our overall experience has been positive. The platform offers a broad range of integrations, supports complex payment environments, and the Corefy team has been responsive and collaborative when addressing operational and technical requirements.

Karla Gomez, Head of Payments, Grand Cru Concepts

Conclusion

Grand Cru Concepts addressed Corefy seeking speed, control, and a payment setup that wouldn't need to be rebuilt whenever the business entered new territory.

Just over a year in, that's exactly what they have:

• New providers connect without new engineering.
• Payouts route flexibly across the stack, not locked to the history of a single deposit.
• The team that once managed payments across fragmented systems now runs everything from one place and spends less time on infrastructure, more time on the product.

For a platform operating at scale across multiple markets, the ability to expand the payment stack without expanding the engineering burden is what keeps growth compounding rather than stalling.