Case Studies
12‑Year Java Monolith → Microservices
Categorization:
Challenge
The organization was constrained by a 12-year-old monolithic Java system, which limited scalability, slowed down deployments, and increased the complexity of onboarding new partners. The tightly coupled architecture made it difficult to evolve the platform in line with business needs, creating operational inefficiencies and long-term maintenance challenges.
Solution
By transforming the legacy system into a modern microservices architecture, the organization unlocked long-term scalability and operational agility. Domain-aligned modules, a CI/CD-ready codebase, and a fully automated test suite enabled faster, safer deployments while significantly simplifying partner onboarding and ongoing system evolution.
Impact
Business Results
The modernization of the platform delivered measurable operational and business impact, reducing costs while accelerating time-to-market and improving partner integration efficiency.
Tackling a project of this scope, in tranches that make sense for the business’s goals, might not have been possible without the underlying understanding provided by the BIAN Service Domain model and SAP LeanIX platform.”
Paulo Pereira
Architecture Director @ CGD (2025)
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