The significance of data mapping in integration processes lies in its facilitation of data transformation and movement between different systems or applications. It involves defining how data from one source corresponds to another, ensuring that information is accurate and consistent during transfers. By clearly mapping data fields, organizations can streamline their operations, enhance data quality, and reduce errors that may occur during integration. This is particularly vital in maintaining interoperability across disparate systems, ultimately leading to better decision-making and improved business outcomes as data flows seamlessly between platforms.