30+ enterprise-scale systems migrated to AWS
50% faster end-to-end application response time
3M+ users supported with platform enhancements and 24x7 service
Owning Change in Financial Services
Our customer is a market-leading banking and financial services provider, serving over 40 million people across 55+ markets worldwide. As part of their broader enterprise modernisation roadmap, they needed to urgently re‑architect and migrate their high‑adoption mobile payments platform to AWS cloud.
Cutting–Edge Mobile Payments at Scale
Modernising and Migrating Payments Infrastructure to AWS
Supporting more than three million users round-the-clock, our customer’s flagship mobile payments platform sat at the core of everyday digital transactions, leaving zero tolerance for unwanted downtimes, performance regression, or security compromise. As user volumes and transaction complexity continued to grow, the limitations of the existing platform became increasingly pronounced.
Legacy architectural patterns constrained scalability and flexibility, while resilience relied on fragile, cost‑intensive workarounds. The platform ecosystem was deeply interconnected, spanning six core applications and 30 enterprise banking systems, all operating under stringent regulatory and security controls. Peak‑time demand further exposed performance bottlenecks and limited in‑house cloud migration capability increased delivery risk.
With incremental optimisation no longer keeping pace with growth, our customer needed to undertake a fundamental architectural shift rather than rely on tactical fixes, ensuring the delivery of a scalable, resilient, and secure payments platform.
End‑to‑End Payments Platform Re-Architecture
Enabling Cloud Migration with Security, Stability, and Speed
As a long‑standing strategic partner to our customer, TEKsystems was entrusted to support the initiative and bridge the existing capacity and capability gaps. Working closely with key programme stakeholders, our team designed and delivered a full re‑architecture and migration of the payments platform to a resilient, cloud‑native AWS environment. Our engagement balanced delivery velocity with security, ensuring continuous availability of live payment services while modernising the underlying architecture at scale.
To support the initiative end‑to‑end, TEKsystems rapidly scaled a specialised, cross‑functional team of 25+ consultants spanning cloud, DevOps, full‑stack development, architecture, testing, and Agile expertise. Delivery progressed through structured two-week sprints, while maintaining strong governance, operational resilience, and alignment with enterprise cloud security standards. Vital cogs in our solution included:
- Cloud‑Native Architecture: Redesigning the platform using native AWS services and modern design patterns to support elasticity and long‑term scalability.
- Multi‑AZ Resilience: Implementing end‑to‑end multi‑AZ architecture across compute, data, and networking layers to deliver true high availability.
- Automated Delivery: Introducing CI/CD pipelines to enable faster, safer, and repeatable deployments with reduced release risk.
- Operational Observability: Enhancing monitoring and alerting to improve production stability, visibility, and response times.
- Resilience Validation: Applying fault injection, chaos testing, and large‑scale performance simulations to validate behaviour under stress conditions.
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Real-World Results
The flagship AWS cloud migration delivered a step‑change in resilience, performance, and operational efficiency, elevating the payments platform into a high‑performing, revenue‑generating asset. The new platform architecture provided a robust foundation to support peak demand, continuous innovation, and future expansion.
Several measurable outcomes were achieved, including but not limited to:
- Enterprise‑Grade Resilience: A true multi‑AZ architecture significantly reduced the risk of service disruption across a high‑adoption, mission‑critical payments platform.
- Performance Improvement: End‑to‑end response times improved by more than 50%, consistently achieving sub‑500ms performance at scale under peak load conditions.
- Cross‑Cloud Connectivity: TEKsystems became the first external vendor to design and implement secure cross‑cloud connectivity across our customer’s technology ecosystem.
- Globally Replicable Cloud Model: The architectural patterns, delivery approach, and governance model established during the programme are now being replicated across the customer’s global technology teams.
