Event Grid vs Event Hubs vs Service Bus

Comparison of services

Service	Purpose	Type	When to use
Event Grid	Reactive programming	Event distribution (discrete)	React to status changes
Event Hubs	Big data pipeline	Event streaming (series)	Telemetry and distributed data streaming
Service Bus	High-value enterprise messaging	Message	Order processing and financial transactions

Ref From <https://docs.microsoft.com/en-us/azure/event-grid/compare-messaging-services>