Which Azure service is best for handling real-time event streams?

Azure Event Hubs is specifically designed for handling real-time event streams, making it the best choice among the options provided. It enables the ingestion of a large volume of events and allows users to process and analyze data at scale. Azure Event Hubs is optimized for high-throughput scenarios, accommodating millions of events per second, which is ideal for scenarios such as telemetry data processing, live dashboards, and real-time analytics engines.

This service effectively decouples the event producers from consumers, allowing multiple applications to consume the same event stream simultaneously. It supports event streaming platforms and integrates seamlessly with other Azure services for data processing and analytics.

The other services mentioned have different primary functions. Azure Event Grid is excellent for building event-based architectures and automating workflows by dispatching events to various services but is not focused exclusively on large-scale event stream processing. Azure Service Bus is intended for reliable messaging between applications, supporting queuing and publish-subscribe patterns rather than high-throughput event streaming. Azure Logic Apps is designed for orchestrating workflows and integrating services rather than directly processing real-time event streams. Therefore, when it comes to handling real-time event streams effectively, Azure Event Hubs is clearly the optimal solution.