What is a distinguishing feature of data streams processed in real-time compared to those processed step-by-step without delays?

A distinguishing feature of data streams processed in real time is the minimal delay between data arrival and processing. Such streams require instant reaction and event processing as they occur.

Unlike batch processing, where data is collected and processed in large chunks with delay, real-time streams are processed continuously and with low latency, which is important for applications such as online gaming, financial services, or monitoring systems.

Therefore, the key difference is low latency and continuous processing.