Azure Service Bus integration with Azure Event Grid allows the Service Bus to natively emit events (such as active messages available with no listeners) directly to Event Grid. This specific architectural capability is exclusively supported on the Premium tier of Azure Service Bus.

Furthermore, establishing this integration requires the creation of an Event Grid subscription on the Service Bus namespace. This is a control-plane management operation, which mandates a minimum of the Contributor RBAC role on the resource. The Azure Service Bus Data Owner and Data Receiver roles are strictly intended for data-plane access (sending and receiving messages) and do not grant the necessary authorization to configure resource integrations or manage event subscriptions.

Official Vendor Documentation (Microsoft Learn): Azure Service Bus to Event Grid integration overview.

Section: "To enable the feature, you need the following items" strictly dictates the prerequisite of "A Service Bus Premium namespace" and "Contributor access to the Service Bus namespace."