Event Grid
Azure Event Grid is a fully managed event routing service that enables event-driven, reactive programming by connecting event sources (like Azure services, custom applications, or third-party systems) to event handlers (such as Azure Functions, Logic Apps, or webhooks). It uses a publish-subscribe model to deliver events reliably and at scale, supporting filtering and routing based on event types and content. This service simplifies building decoupled, serverless applications that respond to changes in real-time.
Developers should use Event Grid when building event-driven architectures in Azure, such as for real-time notifications, automation workflows, or integrating disparate systems without tight coupling. It is ideal for scenarios like processing IoT telemetry, reacting to changes in Azure resources (e.g., blob storage updates), or orchestrating microservices, as it reduces complexity by handling event delivery, retries, and scalability automatically.