Oracle Cloud Infrastructure (OCI) Data Flow is a

A fully managed machine learning service provides developers and data scientists with the ability to build, train, and deploy machine learning (ML) models quickly. [Source: AWS]

Apache Spark service that performs processing tasks on extremely large datasets—without infrastructure to deploy or manage. Developers can also use Spark Streaming to perform cloud ETL on their continuously produced streaming data. This enables rapid application delivery because developers can focus on app development, not infrastructure management.