Apache Airflow, created at Airbnb in 2014 and now an open-source project under Apache, is a popular orchestration tool for managing complex data workflows. It operates using Directed Acyclic Graphs (DAGs) to define tasks and their dependencies. Core components include the Scheduler, Web Server, Metadata Database, and Workers. Airflow supports task concurrency, resource management, and integrations with external systems via operators and hooks. It offers various executors for task management, including SequentialExecutor, LocalExecutor, CeleryExecutor, and KubernetesExecutor. Deployment options range from single-machine setups to distributed and Kubernetes-based environments.
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