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RAN-AZ900-00034
Ranvier · AZ900

Exam AZ900 Topics: cloud-concepts Difficulty: hard

A team is choosing between a classic always-on hosting plan and a serverless approach for a web API that mostly sits idle and wakes up for short bursts. Which statement correctly distinguishes the serverless approach in this comparison?

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  1. A. It requires at least one always-warm instance running at all times so that responses are never delayed by cold starts
  2. B. Functions are invoked by HTTP triggers, scale fast on events, and bill pay-as-you-go — not dedicated instances running around the clock
  3. C. Its functions must run continuously in the background, polling for incoming requests to react
  4. D. It always costs more than a dedicated plan, because idle time is billed at the full hourly rate
Reveal answer

Correct answer: Functions are invoked by HTTP triggers, scale fast on events, and bill pay-as-you-go — not dedicated instances running around the clock

Reference: https://learn.microsoft.com/en-us/azure/azure-functions/functions-overview

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Official Answer (B): Functions are invoked by HTTP triggers, scale fast on events, and bill pay-as-you-go — not dedicated instances running around the clock

Ranvier · AZ900

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