Data Integration is the process of combining data from different sources into a single, unified view. This process involves consolidating data from various databases, systems, and applications, often using ETL (Extract, Transform, Load) or ELT (Extract, Load, Transform) processes. Data integration enables organizations to provide a cohesive and comprehensive view of their data, facilitating better analysis, decision-making, and operational efficiency. It supports activities such as data warehousing, business intelligence, and data migration.