Apache Airflow vs Buck2

Apache Airflow is an open-source workflow orchestration platform for programmatically authoring, scheduling, and monitoring data pipelines. Workflows are defined as directed acyclic graphs (DAGs) in Python, with a web-based UI for monitoring and management. Airflow is widely used for ETL/ELT workflows, ML pipelines, and data engineering tasks.

Buck2 is Meta's open-source build system, a complete rewrite of the original Buck. It provides fast, reliable, multi-language builds with remote execution support and a Starlark-based configuration language.