Legacy SOAP-Based Interfaces
Visa’s real-time payment services were exposed through WSDL/SOAP interfaces. While robust, these interfaces were complex and difficult for modern developers to integrate with web and mobile applications.
Visa Transformed Legacy Cross-Border Payments
with Apigee APIs
Client Overview
Visa is a leading cross-border payments provider authorized and regulated by the UK Financial Conduct Authority (FCA). Operating across more than 50 countries, Visa delivers innovative payment solutions by enabling direct access to local banks in destination markets. This approach eliminates traditional cross-border payment challenges, including hidden fees, processing delays, and limited transaction visibility. As part of its continued digital evolution, Visa sought to modernize its legacy backend payment services to better support modern digital channels and developer ecosystems.
Business Objective
Visa’s primary objective was to modernize its legacy real-time payment services without disrupting the stability and reliability of its existing backend systems. The organization wanted to enable seamless integration with modern web and mobile applications while accelerating partner onboarding and developer adoption. Instead of rebuilding the platform entirely, Visa aimed to introduce an API-driven architecture that would provide long-term flexibility, strengthen security and governance, and significantly reduce time-to-market for new services.
Industry
Finance
Platform
Apigee
Service
API Modernization
Nick Owen
CTO
We are thrilled to share our positive experience with NeosAlpha. Initially engaging them for their...
Read More Challenges
Integration Barriers for Customers
Clients found it challenging to connect modern applications directly to SOAP-based services, limiting adoption and slowing innovation.
Security and Governance Requirements
Any modernization initiative needed to maintain strict financial-grade security, authentication, and regulatory compliance without compromising system integrity.
Want to modernize legacy financial services without disrupting mission-critical systems? NeosAlpha helps fintech and payment providers implement secure, API-led architectures using Apigee for faster innovation and scalability.
Explore our Google Apigee ExpertiseSolutions
API-Led Modernization Strategy
NeosAlpha implemented a modernization approach rather than a full rebuild. An API layer was introduced using Apigee to sit on top of Visa’s existing legacy platform, preserving backend integrity while enabling modern consumption patterns.
SOAP-to-REST Transformation Layer
The solution transformed legacy SOAP/XML services into modern REST/JSON APIs, making integration simpler for web and mobile applications. This shift from service-based to resource-based architecture enhanced usability and long-term scalability.
Enterprise-Grade Security Framework
OAuth 2.0 authentication and SHA-256–based security mechanisms were implemented to ensure secure access to payment services. The API layer also integrated seamlessly with Visa’s existing identity and user management systems.
API Gateway and Developer Enablement
Apigee was configured as the centralized API gateway, providing traffic management, policy enforcement, and analytics. A Drupal-based developer portal was built to publish API documentation, XSD-to-API references, and onboarding resources to accelerate partner adoption.
Governed and Scalable API Ecosystem
The API management framework enabled controlled service exposure, detailed monitoring, and performance analytics while maintaining compliance with financial industry standards.
Results
Faster Time-to-Market
By adopting a modernization strategy instead of rebuilding, Visa accelerated service rollout and reduced implementation timelines.
Improved Developer Adoption
REST-based APIs significantly simplified integration, enabling quicker onboarding of partners and customers.
Preserved Legacy System Integrity
The API layer allowed Visa to retain the robustness and reliability of its existing payment engine while modernizing the interface layer.
Future-Ready Fintech Architecture
Visa established a flexible, secure, and scalable API-driven architecture that positions the organization for continued innovation in the global payments ecosystem.
Technology Stack
Our Success Stories
From startups to Fortune 500s, see how we've helped businesses evolve their digital ecosystems and deliver measurable impact.
Get in touch
Tell us what you're looking for and we'll get you connected to the right people.
Please fill the form below or send us an email at [email protected]