In this fifth episode, we explore Azure Event Grid, the versatile eventing backplane for Microsoft Azure and Microsoft Fabric. This episode details how Event Grid functions as a unified system combining a fully conformant MQTT 3.1.1 and 5.0 broker with a CloudEvents-based PubSub engine. We break down the technical differences between the Basic tier, which focuses on event-driven push delivery to targets like Azure Functions and Webhooks, and the Standard tier, which introduces namespaces, VNet support, and queue-like pull delivery. Whether you are managing IoT telemetry from hundreds of thousands of devices or building serverless architectures, you will learn how Event Grid handles complex routing, retry logic, and integration with Microsoft Fabric.