Microsoft Azure Solutions Architect Expert AZ-305 Practice Question

Azure Event Grid is designed for large-scale, serverless, event-driven architectures. It delivers events in near real time with an at-least-once guarantee, automatically manages infrastructure, and offers built-in integrations with many Azure services-including Storage, IoT Hub, and custom topics-simplifying the onboarding of new event sources. Event Grid supports fan-out by allowing multiple event handlers to subscribe to the same topic and provides subject and advanced filtering to route events only to interested subscribers.

Azure Service Bus topics can broadcast messages to multiple subscriptions, but Service Bus is optimized for enterprise messaging scenarios that require ordered, state-full messages rather than lightweight publish/subscribe events, and it does not natively integrate with diverse Azure service events without additional code. Azure Event Hubs focuses on high-throughput data ingestion for streaming analytics, not generalized event routing with filtering. Azure Notification Hubs targets mobile push notifications and is not intended to act as an event backbone for microservices. Therefore, Azure Event Grid with a custom topic best meets all stated requirements.