Azure Event Hubs is a cloud-based service provided by Microsoft Azure that allows users to ingest and process large amounts of data in real-time. It acts as a highly scalable data streaming platform, enabling applications to receive and analyze millions of events per second from various sources, such as IoT devices, applications, and logs. With Azure Event Hubs, developers can easily build applications that require real-time analytics and monitoring. The service supports multiple protocols and integrates seamlessly with other Azure services, such as Azure Stream Analytics and Azure Functions, making it a versatile solution for handling big data workloads efficiently.