FaXimmé®
Cards and payments assurance platform
Build confidence in every transaction.
Designed for global scale.
Tailored for regional needs.
The cards and payments ecosystem continues to become more interconnected, and the pace of change is rapid. Real-time payments, digital wallets, open banking, regulatory mandates, scheme updates, evolving fraud threats, and rising customer expectations continue to increase the complexity of handling financial transactions globally. As institutions modernise payment platforms, launch new products, migrate infrastructure, and integrate emerging technologies, ensuring the integrity, security and reliability of every transaction and the data it carries is critical.
FaXimmé® is a purpose-built, automated, web-based transaction assurance platform that enables banks, card issuers, acquirers, payment networks, and processors to validate financial transactions and associated data across complex payment environments. Built on more than four decades of Expleo’s experience supporting large-scale cards and payments transformation programmes, FaXimmé® combines configurable message simulation and automated functional and performance validation to help organisations accelerate change while protecting transaction integrity.
Download the FaXimmé® brochure
Discover how FaXimmé® helps financial institutions accelerate transformation while strengthening transaction assurance.
Global and regional coverage
FaXimmé® supports global and regional schemes and can be configured for country-specific formats, routing rules, transaction types, and compliance needs. The platform’s configurable approach is particularly valuable when organisations need to verify regional scheme requirements without rebuilding the underlying simulator for each market.
Why global financial institutions choose FaXimmé®
- End-to-end transaction assurance across functional, integration, certification, regression, and performance validation
- Configurable ISO 8583 and ISO 20022 simulation for cards, account-to-account payments, real-time payments, and cross-border messaging
- Automated validation of message structure, transaction data fields, routing, processing outcomes, and response handling
- Data-focused assurance for tokenisation, encryption, data protection, PCI controls, audit trails and fraud prevention workflows
- Performance at enterprise scale, supporting stress, soak, spike, and volume validation at 2,000+ TPS across 24+ concurrent connections
- Modern and legacy integration, supporting payment hubs, issuer platforms, switches, core banking systems, APIs, and scheme interfaces
- Regional adaptability, helping teams address country-specific schemes, message variants, regulatory needs, and payment workflows
- Real-time operational visibility through a unified dashboard for transaction outcomes, errors, trends, and analysis
- Reduced dependency on constrained environments, external schemes, and manual transaction reviews
- Improved resilience against operational failures, fraud exposure, integration defects, and compliance risk
Expleo recognised as a Leader in Quality Engineering and AI in the NelsonHall NEAT Evaluation.
Modern payments demand
modern assurance
Whether you are modernising core banking, integrating a card scheme, implementing ISO 20022, or strengthening fraud controls, our specialists can help define the right validation approach.
Discover how FaXimmé® can streamline cards and payments modernisation while accelerating business transformation.
“The potential cost of transaction failures and fraud incidents extends beyond operational disruption, resulting in a loss of customer trust. FaXimmé® gives technology and business teams a reliable solution to assure outcomes across transaction volumes and types before deployment, simulating production-grade scenarios across the payments ecosystem. It significantly improves application resilience, integrity and the accuracy of authentication and authorisation processes.”
Srinivasasundar Bandepalli
Head of Cards & Payments Practice, Expleo
Request a personalised demonstration
Modern payments demand
modern assurance
Whether you are modernising core banking, integrating a card scheme, implementing ISO 20022, or strengthening fraud controls, our specialists can help define the right validation approach.
Discover how FaXimmé® can streamline cards and payments modernisation while accelerating business transformation.
“The potential cost of transaction failures and fraud incidents extends beyond operational disruption, resulting in a loss of customer trust. FaXimmé® gives technology and business teams a reliable solution to assure outcomes across transaction volumes and types before deployment, simulating production-grade scenarios across the payments ecosystem. It significantly improves application resilience, integrity and the accuracy of authentication and authorisation processes.”
Srinivasasundar Bandepalli
Head of Cards & Payments Practice, Expleo