Reverse ETL platforms sync modeled data from the data warehouse out to operational business tools — CRMs, marketing automation, ad networks, support systems, payment platforms, product engagement tools — making warehouse-derived insights actionable in the systems where business users work. Core capabilities include warehouse-native modeling (often on top of dbt models), destination-tool connectors for common SaaS operational systems, audience and segment building, incremental sync with diff detection, field mapping and data-type coercion, sync observability, and access control for sensitive field syncs. The category operationalizes the warehouse as the customer-data source of truth. Leading vendors include Hightouch, Census, Rudderstack, and Polytomic.