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Which Azure service automatically scales Function App consumption based on event source backlog (e.g. queue depth in Service Bus)?
AThe Functions runtime's built-in scaler (or KEDA in Container Apps)
BUsing only Reserved Instances
CDisabling auto-scale entirely
DManually clicking 'scale up' in the portal
Answer & Solution
Correct answer: A. The Functions runtime's built-in scaler (or KEDA in Container Apps)
Functions scales based on event-source metrics out of the box; Container Apps uses KEDA. Manual scaling doesn't work for spikes; disabling scale defeats the purpose; Reserved Instances are an EC2 / VM concept.
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