Which Azure Functions scaling feature enables event-driven scaling based on external event sources like Kafka, Azure Cache for Redis, and custom metrics in any hosting plan?
- A HPA in AKS
- B KEDA (Kubernetes Event-Driven Autoscaling) (correct answer)
- C Consumption plan auto-scale
- D Premium plan burst scaling
Shortcut: When running on AKS or Container Apps, KEDA drives function scaling based on external event sources. In Premium plan, the built-in scale controller uses similar KEDA scalers.