Which Azure Functions trigger is appropriate for processing blob files uploaded to Azure Storage without using Event Grid?

1. A HTTP trigger with polling
2. ✓ B Blob Storage trigger (polling or Event Grid-based) (correct answer)
3. C Timer trigger with SDK listing
4. D Service Bus trigger with blob path

Shortcut: The Blob Storage trigger fires when a blob is added/modified. The modern Event Grid-based blob trigger (extension version 5+) is recommended for reduced latency vs. polling-based trigger.