It&#x27;s a Batch+Stream unified processing model, an SDK. Idea is you can code up your pipeline in Dataflow and have your choice of where to run it - Spark, Flink, etc.<p>Google Cloud Dataflow is a fully-managed service that executes Dataflow pipelines and has nice value adds on top like fault tolerance and auto-optimization.<p>(Disclosure: I work on BigQuery, not Dataflow)