Apache Airflow 2.0, released in late 2020, brought significant advancements to the open-source workflow orchestration platform, originally created by Airbnb, by addressing user-reported pain points and enhancing core functionalities. Key improvements include a new high-availability scheduler that supports concurrent running to eliminate downtime and improve scalability, a comprehensive REST API to facilitate easier third-party access and automation, and the TaskFlow API for streamlined dependency management and information passing between tasks. Other notable features are the introduction of Task Groups to replace SubDAGs for better task management, a simplified Kubernetes Executor for optimized resource use, and a refreshed UI for an improved user experience. Additionally, the release decoupled provider packages from the core distribution, allowing independent updates and reducing dependency issues. These changes, driven by user feedback and community collaboration, make Airflow 2.0 a more reliable, scalable, and user-friendly platform for orchestrating complex data workflows.