Public Preview: Azure Event Grid Subscription Identifiers

Gain more flexibility in message handling with Subscription Identifiers by enabling subscribers to identify which subscription triggered delivery, helping streamline client-side processing in more advanced MQTT scenarios.  

Together, these enhancements strengthen Azure Event Grid namespaces as a powerful foundation for modern MQTT messaging—making it easier to connect devices, applications, and cloud services with greater scale, flexibility, and operational simplicity. 

Learn more.