The Query Federation Driver from CData Software allows developers to work with related data from disparate sources without migrating them into a single location. It enables users to aggregate and query data across SaaS applications, Big Data stores, NoSQL databases, flat files, and more by combining CData drivers behind a single driver interface. This solution provides a unified endpoint for accessing data from multiple sources, eliminating the need to replicate or upload data between systems. By federating data, developers can join related data tables from different sources based on common fields, enabling reporting, visualization, and other uses without requiring significant development time and effort.