Azure Event Grid

Azure Event Grid is a fully-managed event routing service that simplifies the creation of event-based architectures. It provides a way to route events between any Azure services or even custom endpoints in a scalable and efficient manner.

Steps

1. Create a topic or select an existing one: A topic represents a stream of events and needs to be created before events can be published to it. It can either be created in the Azure portal or via Azure CLI.
2. Subscribe to the topic: A subscription needs to be created that specifies where the events will be sent to. The subscriber can be an Azure Function, Logic App, WebHook, or any other custom endpoint.
3. Publish an event: An event can be published to the topic, which will trigger the subscription and send the event data to the subscriber.

Examples and Use Cases

Example 1: Application telemetry

An application can publish telemetry events to Event Grid, which can then be routed to various Azure services or custom endpoints for further processing. For example, if an application publishes CPU metrics to Event Grid, the metrics can be sent to Azure Log Analytics for analysis and monitoring purposes.

Example 2: Serverless workflows

Event Grid can be used to create serverless workflows that respond to events. For example, an organization can set up a workflow that triggers when a new file is added to a storage account. The workflow can then send an email notification or create a new record in a database.

Example 3: Hybrid cloud integration

Event Grid can also be used to connect Azure services with on-premises applications or third-party services. For example, if an organization has an on-premises inventory management system that needs to be notified when a product is added to an Azure Cosmos DB database, they can use Event Grid to route the event to the on-premises system.

Important Points

• Event Grid is a fully-managed service and does not require any infrastructure setup.
• Event Grid supports both event publishing and subscription via Azure CLI, SDKs, and REST APIs.
• Event Grid provides built-in support for retry policies and dead-lettering.

Summary

Azure Event Grid is a powerful event routing service that helps simplify event-based architectures by providing scalable and efficient event routing capabilities. By enabling seamless integration between Azure services, custom endpoints, and third-party services, Event Grid makes it easy to build complex workflows and architectures that respond to real-time events.