An insurance company receives claim documents at unpredictable times throughout the day. Each new document must be validated and converted a few seconds after it lands in a storage container. The company wants to avoid paying for compute that sits provisioned but idle between documents. Which Azure compute service should the company use?

1. A. A virtual machine that runs a validation service continuously and polls the storage container for new documents 💬 A
2. B. An Azure function that wakes up when a new document arrives, with no resources kept provisioned while no events occur ✓ B
3. C. A virtual machine scale set that keeps a minimum number of instances running at all times to guarantee instant pickup 💬 C
4. D. An always-on container group that listens for new documents and processes them as they appear 💬 D

Reveal answer

Correct answer: An Azure function that wakes up when a new document arrives, with no resources kept provisioned while no events occur

Reference: https://learn.microsoft.com/en-us/training/modules/describe-azure-compute-networking-services/6-functions/