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Azure Event Grid is updated regularly with new features and improvements. To stay up to date with the most recent developments, this article provides information about the features that are added or updated in each release.
July 2026
Autoscale for Event Grid namespaces (preview)
Azure Event Grid namespaces now support autoscale, which automatically adjusts Throughput Units (TUs) based on real-time workload utilization. You enable autoscale on the namespace and specify minimum and maximum TU limits. Event Grid continuously monitors the Autoscale metrics, and adjusts the namespace capacity within your configured bounds. You don't need to configure any manual scaling rules or thresholds.
Autoscale is available for Event Grid namespaces in the Standard tier.
For more information, see the Autoscale overview and the how-to guide for enabling Autoscale.
April 2026
The following features of Event Grid namespaces moved from public preview to general availability (GA):
- MQTT compliance: MQTT Retain support
- MQTT compliance: Shared Subscriptions
- HTTP Publish of MQTT messages in Event Grid
The following features are released in preview:
- MQTT compliance: Subscription Identifiers
July 2025
The following features of Event Grid namespaces moved from public preview to general availability (GA):
- OAuth 2.0 (JSON Web Token) authentication (Refresh: Direct upload of (Privacy-Enhanced Mail) PEM certificates)
- Custom webhook authentication
- Message Queuing Telemetry Transport (MQTT) compliance: Support for assigned client identifier
- MQTT limit change: Inbound MQTT publishing requests per session: 1,000 messages per second
The following features are released in preview:
- MQTT compliance: MQTT Retain support
- HTTP Publish of MQTT messages in Event Grid
May 2025
The following features of Event Grid namespaces moved from public preview to GA:
- Cross-tenant delivery in the Basic tier:
- Azure Event Hubs
- Azure Service Bus (queues and topics)
- Azure Storage queues
- MQTT compliance: Message ordering now supported
- MQTT limits change:
- Segments per topic/topic filter: 15
- MQTT connect rate per client session: 0 connection attempts per second per client session
The following features are released in preview:
- Network security perimeter support for inbound and outbound communication in Event Grid topics and domains
- Managed identity support for webhook delivery
- Cross-tenant delivery in the Basic tier:
- Webhooks
- Namespace topics
- Cross-tenant delivery in the Standard tier (Event Grid namespaces):
- Event Hubs
- Webhooks
- Azure Blob Storage (dead letter storage)
- OAuth 2.0 (JSON Web Token) authentication (Refresh: Direct upload of PEM certificates)
- Custom webhook authentication
- Send MQTT events directly to Microsoft Fabric by using Event Grid
- MQTT compliance: Supports assigned client identifier
- MQTT limit change: Inbound MQTT publishing requests per session: 1,000 messages per second
November 2024
The following features of Event Grid namespaces moved from public preview to GA:
The following features are released in preview:
- Forward events from one Event Grid namespace topic to another namespace topic
- Network security perimeter in Event Grid
The following new articles were also published:
- Transport Layer Security support
- Cross-tenant delivery in Event Grid
- Send events from Event Grid Basic to Event Grid namespace topics
May 2024
The following features of Event Grid namespaces moved from public preview to GA:
The following features of Event Grid namespaces are released as public preview features:
November 2023
The following features of Event Grid namespaces moved from public preview to GA:
The following features of Event Grid namespaces are released as public preview features:
May 2023
The following features are available as public preview features:
- Pull-style event consumption by using HTTP
- MQTT v3.1.1 and v5.0 support
Related content
- For an overview of Event Grid, see Azure Event Grid overview.