Silverflow, the cloud-native payments processing platform, has announced a new integration with Discover and Diners Club International, enabling global card acceptance through a single API connection.
The integration expands global card acceptance across Silverflow’s cloud-native payments infrastructure and is aimed at simplifying access to two established international card schemes, particularly for merchants operating in travel, that now reaches new post-pandemic records, hospitality, retail, and transportation sectors.
Discover Network and Diners Club International are accepted in more than 185 countries and territories and collectively process billions of transactions annually. The integration allows acquiring banks, PSPs, and commerce platforms using Silverflow to enable both networks without the traditional legacy integration work typically associated with ISO 8583 messaging standards.
Instead, Silverflow connects directly to card networks through a cloud-native API-first architecture using modern JSON-based interfaces. Unlike traditional card network integrations, which rely on legacy ISO 8583 messaging standards, Silverflow uses a cloud-native API-first architecture with modern JSON-based interfaces.
This integration aspect is important, since recent IDC data commissioned by Edenred Payment Solutions demonstrated that while 90% of companies feel payment quality is important, legacy systems create obstacles that limit potential growth for 84% of organisations.
Silverflow’s approach significantly reduces integration complexity while enabling real-time transaction data visibility, improving observability, and optimising global payment performance across acquiring portfolios.
The integration is expected to be most relevant for cross-border-payments-heavy sectors, including airlines, hotels, online travel agencies, ride-hailing platforms, and urban mobility operators.
Anne Willem de Vries, Co-founder of Silverflow, said demand for seamless international payment acceptance continues to rise:
“International commerce continues to expand and merchants are increasingly serving customers who expect to pay with the cards they already use at home,” he said. Discover Network and Diners Club help remove friction for both merchants and consumers, particularly in travel and tourism-heavy environments.”
Rajiv Gupta, Vice President of International Markets Development at Discover Network, added:
“By integrating our global payments network into Silverflow’s platform, we are providing a more streamlined path for merchants and acquirers to reach our millions of cardholders worldwide,” Gupta said. “Our focus is on ensuring that Discover Network and Diners Club cardholders enjoy a more seamless payment experience through modern delivery channels our partners provide.”
This announcement builds on Silverflow’s recent Series B funding round and its broader strategy of replacing fragmented legacy processing infrastructure with a unified cloud-native payments stack. The Discover Network integration is already live, while Diners Club International connectivity is expected to follow.
Scale of Discover Network and Diners Club International vs Visa and Mastercard
Even after global expansion, Discover and Diners Club remain significantly smaller than the two dominant global card networks. Combined annual transaction volume is estimated at roughly $600–650 billion, compared with approximately $15 trillion for Visa and $9-10 trillion for Mastercard. This places Discover/Diners at roughly 3% of Visa’s scale and 6-7% of Mastercard’s scale in volume terms.
Despite this, the networks still represent meaningful real-world demand. Their cardholders include U.S. cashback-focused consumers, mid- and near-prime credit segments, and corporate travel users, particularly in the case of Diners Club, which is concentrated in business travel, hospitality, and cross-border spending. These segments tend to generate higher average transaction values than typical retail baskets.
Discover also benefits from strong domestic penetration in the United States, where it is widely issued by banks and competes in everyday consumer spending categories. Diners Club, by contrast, remains more niche but continues to be used in high-value international travel and corporate expense flows.
Why smaller card networks still matter at checkout conversion
Even if Discover and Diners Club represent a small fraction of Visa and Mastercard volumes, they still account for hundreds of billions of dollars in annual consumer spending, meaning real transaction demand from active cardholders.
From a merchant perspective, this matters because checkout is highly sensitive to friction. Large-scale UX research consistently shows that payment-related checkout friction directly impacts e-commerce conversion rates. According to Baymard Institute’s aggregated findings, average cart abandonment is close to 70% globally, with a significant portion attributed to checkout friction such as limited payment options, unexpected payment failures, or complex flows. Improving checkout UX can increase conversion rates by 20-35% in controlled studies.
In this context, even niche networks matter because they reduce the risk of losing a customer at the point of payment. Consumers may choose Discover for cashback rewards, loyalty benefits, or credit positioning in the U.S. market, while Diners Club is often used for corporate travel perks and expense management benefits.
Common incentives include:
- Cashback programmes (notably on Discover cards in the U.S.)
- Category-based rewards (rotating spend categories for Discover)
- Travel and corporate expense benefits (Diners Club, including travel-related acceptance and business reporting features)
If a merchant does not support these networks, the result is not just reduced coverage, but direct checkout failure for specific users, an issue that research shows can have disproportionate revenue impact relative to the network’s share of global volume.
Strategic relevance for payment infrastructure
For payment processors and PSPs, enabling Discover and Diners Club is therefore less about volume dominance and more about maximising acceptance coverage with minimal incremental integration cost. In modern acquiring environments, adding additional card networks via a single API layer, such as Silverflow’s approach, reduces operational overhead while improving global reach, authorisation success rates, and transaction coverage.
As payments infrastructure continues shifting toward API-first and cloud-native architectures, even smaller card networks remain strategically relevant due to their incremental contribution to global payment acceptance and transaction coverage.
