What is a key benefit of using Azure Stream Analytics for event processing?

Using Azure Stream Analytics for event processing provides the key benefit of offering real-time insights on streaming data. This capability is crucial for organizations that require immediate analysis of events as they occur, enabling them to make timely decisions based on the most current information.

Real-time insights are essential in various scenarios like fraud detection, live monitoring of IoT devices, or processing social media feeds. By utilizing this service, users can set up queries that analyze the data on-the-fly as it streams into the system, allowing for immediate responses to changing situations.

The other options present attributes that either do not align with the primary purpose of Azure Stream Analytics or do not capture its core advantages effectively. While built-in machine learning capabilities can enhance data analysis, the primary strength of Azure Stream Analytics lies in its ability to deliver real-time analytics, which is where its value really shines.