Omni-channel Lottery Platform & PAM Engineering

By embedding a dedicated Architecture Discovery Sprint that translated business needs into executable product architecture, we ensured scalability, compliance, and system integrity were foundational design elements rather than later optimizations. Working hand-in-hand with the provider’s technical leaders, we mapped the complete lottery lifecycle, from ticket purchase and payment processing to draw execution and financial reporting.

This process identified core subdomains and established well-defined service responsibilities with strict data ownership per service. A secure authentication strategy using OAuth2 and Keycloak was designed early to handle the targeted volume of over 1.2 million daily transactions.

The technical core of the project involved a total shift away from rigid, on-premise legacy systems toward a modern, cloud-native microservices architecture hosted on Google Cloud Platform (GCP). This decoupled approach was designed for independent scaling and seamless updates of specific modules, such as game engines or payment gateways, without disrupting the entire ecosystem.

The team established a distributed data ownership model, utilizing MongoDB for high-write transactional services and MySQL for structured, aggregated financial reporting. Architectural decisions were validated together with the provider’s technical leadership, producing an enterprise-grade PAM foundation capable of supporting thousands of physical terminals alongside digital traffic.

Given the scope, development was executed through parallel international workstreams involving multiple teams.

The platform was decomposed into domain-aligned services, including the Digital Service for online sales, the Retail Service for POS operations, and a high-precision Draw Engine for winner selection and settlement. Backoffice and risk management modules enabled dynamic adjustments to system operations, including product configurations and commission rules.

To enable holistic business oversight, a centralized Data Hub was engineered to serve as a single source of truth for the omni-channel platform, synchronizing transactions from 2,500 physical terminals with the digital web platform in real time.

Quality was a shared discipline. We co-established the project-wide testing policy and standards with the provider’s QA teams, aligning on a unified quality gate. A rigorous multi-layered testing culture was embedded into the workflow, including unit, integration, and automated end-to-end scenarios.

Performance and stress testing were prioritized as the cornerstone of the system’s operational integrity. By simulating high-concurrency loads and validating infrastructure limits before go-live, the team significantly reduced production risk for the upcoming migration. This phase validated that wallet operations, bet registrations, and draw processing remained resilient under extreme stress.

The defining moment of the project was the “Big Bang” cutover: migrating the entire lottery operation from the legacy system to the new platform. To mitigate risks, we conducted multiple rounds of simulated data migrations and rigorous rehearsals. The switchover was completed with zero critical incidents, with 2,500+ physical terminals migrated to the new platform while maintaining data integrity and service continuity throughout.

Completing this migration cleanly was a rewarding validation of months of meticulous preparation and the deep professional synergy shared between the CrustLab and provider teams.

Following launch, the platform entered an intense Hypercare period with 24/7 vigilance as it faced its first real-world load from thousands of concurrent users. We monitored live traffic patterns and system health around the clock using Grafana and MongoDB Atlas to proactively detect and mitigate bottlenecks.

As transaction volumes spiked, the time came to provide real-time performance tuning and micro-adjustments to infrastructure. To optimize response times, we balanced the urgency of live environment optimizations with a stability-first mindset, ensuring no regressions occurred during rapid triage. We also kept a close watch on wallet movements and financial settlements, ensuring that every report the business relied on was a perfect, audit-ready reflection of the live transaction data.