75% Less Migration Effort.
97% Migration Completeness.
10 Days → 2.5 Days.

How a global e-commerce platform moved from a legacy PHP monolith to production-ready Java microservices, with AI handling the heavy lifting.

    The Scale of the Challenge

    What made this migration too complex for manual refactoring alone

    Tens of Thousands

    of Lines of Entangled PHP
    A monolith where UI, business logic, and data layers were deeply intertwined. Isolating services or shipping changes meant risking regressions across the entire system.

    ~55%

    Completeness via Manual Methods
    Early manual migration prototypes achieved roughly 55% completeness per module. The remaining gaps required rework, re-testing, and constant oversight, with no consistency across modules.

    10 Days

    per Module, on Average
    Each module migration took around 10 days using conventional approaches, with timelines stretching further as complexity grew and quality varied.

    The Architecture Had Become the Bottleneck

    The platform was doing its job. But the monolith underneath couldn’t support what came next, every new feature meant rework across tightly coupled layers, slowing release cycles and making CI/CD integration harder with each iteration. Moving to Java microservices was the clear next step. But doing it manually meant months of engineering effort, inconsistent output across modules, and no reliable way to maintain code quality at scale. The team needed a migration approach that could move faster without trading speed for accuracy.

    How AI Cut Module Migration from 10 Days to 2.5

    Semantic decomposition, AI code generation, and automated validation, 97% first-pass completeness.
    Full breakdown in the case study.

    What’s new from ​EXIQO™

    Human-in-the-Loop. Scaling AI Without Losing Control

    Human-in-the-Loop. Scaling AI Without Losing Control

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    R Systems launches EXIQO™

    R Systems launches EXIQO™

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    We are R Systems

    RSI is a trusted software engineering and digital transformation services partner to global enterprises navigating technological change. RSI enables technology companies, SaaS platforms, and enterprises to solve real-world challenges, accelerate time to market, and scale AI-driven innovation across the full software development lifecycle and business automation. With proven AI fluency at every layer of the technology stack, RSI helps clients not only adopt AI, but operationalize it, embedding intelligence into products, platforms, and processes. RSI’s AI Studio, EXIQO, brings together AIEV-trained engineers (RSI’s proficiency-based certification framework across AI, to drive engineering velocity) and the enterprise-ready Optima AI platform to orchestrate and deliver AI-led transformation.