Data integration is a crucial concept for organizations with diverse systems and data repositories, as it enables universal accessibility of data regardless of its origin or format. The process involves combining data from various sources into a unified view, enhancing data accessibility, improving data quality, supporting comprehensive analytics, and enabling informed business decision-making. To achieve this, organizations can employ different approaches such as ETL, ELT, streaming, APIs, and data virtualization, depending on their specific needs and requirements. Data warehouses and data lakes play a vital role in data integration, with the former storing structured data for historical analysis and the latter handling raw data in its native format. By standardizing data formats, cleaning and pre-processing data, choosing the right integration tool, establishing data governance practices, and leveraging automation, organizations can effectively integrate their data from multiple sources, ultimately empowering informed decision-making and improved data management across the organization.