Here is a 1-paragraph summary of the text, covering key points about Robinhood's use of Apache Airflow: Robinhood Markets, Inc., a leading financial services company, relies on Apache Airflow to manage its complex trading and operational workflows at scale. The company uses Airflow for diverse use cases across trading, clearing, money movement, and backend services, including charging margin interest daily, processing stock options after expiration, and managing cost basis adjustments. Robinhood employs a multi-cluster Airflow architecture with 15 clusters supporting different business domains, ensuring high availability and reliability through deployment of clusters across multiple Kubernetes environments and leveraging multi-AZ setups. The company has successfully migrated from Airflow 1.10 to Airflow 2, involving its 15 clusters, 75 workers, and over 4,000 data pipelines, and plans to enhance Airflow's integration with its internal authentication system and implement in-place upgrades with zero downtime for future enhancements.