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The purpose of data lineage is to trace the origin and evolution of data through its lifecycle. This concept involves understanding where data comes from, how it moves and transforms across various stages, and how it is ultimately used within an organization. Data lineage provides a visual representation or map of the data's journey, showing each step of the data's path from source to destination. This is critical for data governance, compliance, quality control, and ensuring accuracy in reporting and analytics. Having visibility into data lineage helps organizations assess the impact of changes, maintain compliance with regulations, and improve overall data management practices. This understanding is essential for making informed business decisions based on reliable data.