Azure Messaging · What’s New · March 2026 The Enterprise MQTT Broker for Every Connected Ecosystem Scale to millions of devices, enforce zero-trust security, and route real-time events across every service, system, and application — all on Azure’s hyperscaler-grade messaging backbone. 1,000 msg/sec/session 5M+ concurrent connections 1 MB large message support TLS 1.2+ enforced encryption The Modern Broker for Every Connected Ecosystem Whether you’re connecting vehicles, factory floors, edge devices, retail infrastructure, financial systems, or cloud-native services — Azure Event Grid MQTT Brok