Pharmacy Benefit Manager audit platform modernization leveraging NTT DATA Azure Fabric, combining legacy Caribou Systems with modern cloud-native data pipeline architecture. Data flows from PBM sources through CRx Gateway API layer into Azure Data Factory, then through Microsoft Fabric Lakehouse medallion layers (Bronze/Silver/Gold) with Databricks/Spark processing. AI Recommendation Engine powered by Azure OpenAI Service enables cost optimization, prior authorization automation, and anomaly detection, while Audit Manager and specialized audit systems (Claims, Financial, Benefit) consume curated data via REST/GraphQL APIs and Power BI dashboards. This architecture demonstrates hybrid modernization—preserving existing audit logic while enabling AI-driven insights and operational efficiency at scale. Fork this diagram on Diagrams.so to customize data flows, add compliance layers, or adapt the medallion pattern for your own multi-source audit platform. The explainability layer ensures audit transparency and regulatory compliance throughout the AI recommendation pipeline.