Enterprise data pipeline architecture ingesting SAP S/4HANA, Salesforce, HRMS, and Excel sources into a multi-zone data lake with Bronze/Silver/Gold medallion layers. Data flows through SAP BAPI/OData extractors, JDBC connectors, and REST API ingestion into object storage, then transforms via Spark ETL and Delta Live Tables with data quality checks and lineage tracking. The curated Silver layer organizes data by domain (Finance, Sales, HR, Ops), while the Gold layer serves aggregated KPIs and MIS summaries to SQL analytics, BI dashboards, and REST APIs. This architecture demonstrates enterprise-grade governance using Unity Catalog, enabling data analysts, executives, data scientists, and ops teams to consume trusted, lineage-tracked analytics at scale.