MQTT Azure Connector
The connector enables connection between MQTT and Azure.
IoT Hub and Event Grid provide different MQTT capabilities and messaging models. The
following table summarizes key differences in MQTT support, topic structure,
communication patterns, and message size.
IoT Hub | Event Grid |
|---|---|
Client-server model with tight coupling between devices and cloud
apps. | Publish-subscribe model that decouples publishers and
subscribers. |
Limited feature support for MQTT v3.1.1. | MQTT v3.1.1 and v5 protocol support. |
Static, predefined topics. | Custom hierarchical topics with wildcard support. |
No support for cloud-to-device broadcasts or device-to-device
communication. | Supports device-to-cloud, high fan-out cloud-to-device broadcasts,
and device-to-device communication patterns. |
256-KB max message size. | 512-KB max message size. |
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