Azure Event Grid

A highly scalable, serverless event broker that uses a publish-subscribe model to automate cloud workflows and integrate distributed systems.

Azure Event Grid eliminates the need for constant polling by pushing real-time notifications from sources like Blob Storage, GitHub, or custom applications directly to handlers like Azure Functions and Logic Apps. It manages massive scale (supporting millions of events per second) with a 99.99% availability SLA and built-in retry logic. By using the CloudEvents 1.0 standard, it ensures cross-platform compatibility while providing sub-second latency for reactive programming and microservices orchestration.

https://learn.microsoft.com/en-us/azure/event-grid/overview