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 Broker is the enterprise messaging backbone that scales from prototype to planet. With deep Azure integration, full MQTT compliance, and hyperscaler-grade security, it's the broker you ship on when it truly matters.
Core Protocol
📡 Full MQTT Protocol Coverage
End-to-end MQTT compliance across all versions, transports, and messaging patterns — so any client, any device, any stack just connects.
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Full compliance
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Rich features + user props
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Low-latency, always-on
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Browser + web-native
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REST-based ingestion
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MQTT v5 Enhancements
Richer error signaling, user properties, message expiry, and request–response patterns built in.
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🌐
Non-MQTT services publish via HTTPS. Ideal for REST backends, legacy systems, and webhooks joining real-time workflows.
GA |
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Shared Subscriptions
Load-balance messages across consumer groups. Scale processing horizontally without duplication.
Preview |
Zero-Trust Security
🔒 Enterprise Authentication Stack
Multi-layered security for every fleet size — from embedded devices to enterprise IAM platforms. Every connection authenticated, every access authorized.
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Assigned Client Identifiers — Deterministic Identity
Pre-assign approved MQTT client IDs for session continuity, enhanced diagnostics, and audit trails. Critical for regulated industries, long-lived device connections, and operational compliance across large fleets.
Hyperscaler Performance
⚡ Built for Massive Scale
From startup-scale prototypes to workloads with up to 5M+ concurrent device connections — Event Grid MQTT Broker grows with your ambitions.
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1,000
messages/sec/session (ingress)
View Quotas & Limits →
High-frequency industrial and automotive signal processing at full speed, per session.
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15
topic segments (GA)
View Quotas & Limits →
Deep hierarchical topic modeling for structured fleets, factories, and telemetry pipelines.
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🔢
1 MB Large Message Support
Send high-res images, video frames, and large telemetry batches. No pre-chunking needed.
Preview |
📈
Auto Scale Up & Down
Elastic namespace scaling that responds to demand in real time — pay for what you use, never throttle a workload.
Coming Soon in Preview |
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IPv6 Support
Native dual-stack networking for modern infrastructure, next-gen telecom, and global device deployments.
Coming Soon in Preview |
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Up to 5M+ Connections
Running large-scale workloads? Talk to us — we'll onboard your production workload with dedicated hands-on support.
Contact Us → |
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Bulk Client Onboarding API
Register thousands of devices in a single API call — credentials, certificates, and auth rules in batch. CI/CD-native.
Preview |
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High Egress Throughput
Up to 500 msg/sec/instance egress for high fan-out scenarios. Perfect for dashboards, monitoring, and analytics consumers.
Preview |
Azure Native Integration
🔀 MQTT Events, Everywhere in Azure
Route MQTT streams directly into Azure's full analytics, automation, and real-time intelligence stack — seamlessly connected to every Azure service you already use.
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Azure Data Explorer
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📨
Event Hubs
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⚙️
Azure Functions
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Logic Apps
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🌟 First-Class Microsoft Fabric Integration
Route MQTT messages and CloudEvents directly from Event Grid Namespaces to Fabric Eventstreams — enabling real-time analytics, storage, and visualization of IoT data without an Event Hub intermediary. Reference architectures for every industrial vertical are available on Microsoft Learn and via the RTI Reference Architectures.
State & Presence
💡 Last Will & Testament + Retained Messages
Know the last known state of every device, and be instantly notified when something goes offline — essential for mission-critical connected systems.
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📣
Last Will & Testament (LWT)
Immediately notify downstream subscribers when a device disconnects unexpectedly. Critical for industrial automation, fleet monitoring, and health-critical telemetry.
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📌
Subscribers receive the latest device value immediately on connect. Configurable expiry, on-demand clearing, Get/List API, and portal experience coming soon.
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Industry 4.0
🏭 Sparkplug B on Azure — Smart Factory, Unlocked
The industrial MQTT standard runs natively on Event Grid MQTT Broker — bringing real-time factory floor intelligence to Azure analytics pipelines. Learn more about Sparkplug B support →
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Device Lifecycle (BIRTH/DEATH)
Track when machines come online and offline. LWT handles unexpected disconnects with zero configuration.
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SCADA Integration
Auto-discover tags in Ignition SCADA with Cirrus Link Chariot. Seamless edge-to-cloud tag sync and live machine vitals.
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Azure Data Explorer / Fabric
Industrial binary Sparkplug payloads ingested into ADE or Fabric for real-time dashboards and automated alerting.
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Edge to Cloud: How It Flows
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1
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Sensors on the factory floor
Machines publish temperature, RPM, and status as Sparkplug B messages via edge gateways.
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Azure Event Grid MQTT Broker ingests
QoS 1 delivery, TLS secured, with LWT for device state awareness and retained messages for new subscribers.
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SCADA auto-discovers tags
Ignition SCADA with Chariot Cirrus Link sees all published tags in real time — zero manual configuration.
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Azure Data Explorer / Fabric analytics
Same stream bifurcated — live operational view and cloud-scale analytics for predictive maintenance and automated alerting.
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Operational Visibility
📊 Deep Metrics for Every Deployment
Full operational telemetry across all broker functions — detect issues, optimize throughput, and ensure SLA compliance at any scale.
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⏱️
Measure end-to-end connection and publish acknowledgment times. Baseline and alert on latency degradation.
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✅
Publish / Subscribe Success Rates
Track success, failure, and throttling events per topic and per session to quickly isolate problems.
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Active Connections
Real-time view of live connections, throughput, and session health across your entire device fleet.
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Customer Impact
🌍 Built for Every Connected Industry
From connected vehicles to financial trading infrastructure to smart retail — Event Grid MQTT Broker powers the most demanding workloads across every sector.
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Connected Automotive
→ Real-time vehicle telemetry at fleet scale
→ Over-the-air event routing and signaling → Edge-to-cloud V2X messaging pipelines → TLS/mTLS for per-vehicle identity → High-frequency CAN bus signal ingestion |
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Smart Manufacturing
→ Sparkplug B + SCADA tag auto-discovery
→ Predictive maintenance event pipelines → Factory floor machine state monitoring → Bulk device onboarding for plant rollouts → QoS 1 delivery for critical control signals |
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DCIM / Data Centre
→ Real-time rack power and thermal monitoring
→ High-frequency sensor event ingestion → Automated alerting and threshold triggers → Secure multi-tenant device namespaces → Fabric Eventstreams for real-time dashboards |
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Finance & Payments
→ Low-latency event streaming for trading signals
→ Real-time payment status notifications → Fraud detection event pipelines → OAuth 2.0 / Entra ID for regulated access → Audit-ready assigned client identifiers |
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Retail & Commerce
→ Real-time inventory and shelf sensor updates
→ Point-of-sale event routing at scale → Connected checkout and payment device streams → In-store IoT device fleet management → Live promotions and pricing event broadcast |
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Smart Buildings
→ HVAC, lighting, and energy sensor telemetry
→ Access control and occupancy event streams → Elevator and facility equipment monitoring → Multi-tenant building namespace isolation → Retained messages for last-known device state |
What's Next
🔭 Coming Soon to Preview
These capabilities are entering preview soon — start evaluating for your workloads today.
| Preview
Large Message Packets (1 MB)
Send images, video frames, and large telemetry batches without chunking. Streamlines edge-to-cloud ingestion.
| Preview
Shared Subscriptions
Load-balance across consumer groups for parallel message processing at scale — no duplication, built-in fault tolerance.
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| Preview
Subscription Identifier
MQTT v5 compliance — tag subscriptions for routing, multiplexing, and fine-grained handler dispatch.
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Bulk Client Onboarding API
Provision entire device fleets in a single API call. Automate with CI/CD pipelines for factory and field deployments.
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Auto Scale Up & Down
Elastic namespace scaling that automatically expands and contracts broker capacity in response to real-time load.
| Coming Soon
IPv6 Support
Dual-stack connectivity for next-gen networks, modern telecom infrastructure, and global IoT deployments.
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Want early access to any of these previews?
We're actively onboarding early customers for all upcoming preview capabilities. Whether you're running a connected fleet, industrial workload, or large-scale IoT deployment — get in touch and we'll get you started.
| Contact Us for Early Access → |
Ready to Connect Everything?
Azure Event Grid MQTT Broker is generally available. Start building enterprise-grade connected ecosystems today — or talk to us about your production workload.
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