The document compares Storm and Oracle Event Processing (OEP) for real-time stream processing. Storm is an open-source distributed computation framework used for processing real-time data streams, while OEP provides a holistic platform for developing, running, and managing complex event processing applications. Some key differences discussed include OEP offering out-of-the-box support for stream processing operations, connecting to data sources, dynamic application changes, and high availability that require custom development in Storm.