DAG Versioning in Airflow: Version Proliferation and Open Questions

This session explores the next phase of DAG versioning in Airflow and the practical questions users face in real deployments. DAG versioning moved Airflow beyond a “latest only” model, but it also introduced confusion around why DAG versions keep increasing, what disabling DAG bundle versioning actually does, what creates a new version, and how users should think about clears, reruns, and backfills after a Dag changes. I will examine a common misconception: disabling bundle versioning does not stop DAG version changes. I will also connect DAG versioning to DAG delivery in Airflow 3, showing how git backed DAG bundles provide a more native alternative to git-sync in Helm-based deployments.