Elasticsearch Data Frames offer a powerful way to aggregate and analyze high-level insights from raw data using the Transform feature, which goes beyond traditional aggregation queries by addressing performance issues and data dimensionality. By creating new secondary indices, Transforms enable pre-aggregation of data around specific entities, improving performance for complex dashboard queries and expanding analytical options, including machine learning capabilities such as outlier detection. The process involves defining the source index, the transformation mechanism, and the destination index, with options for batch or continuous operations. Users can implement these transformations via APIs or through the Kibana interface, allowing for both simple and complex scripted aggregations to be executed, making it feasible to handle large-scale data with enhanced flexibility and efficiency.