An online retailer is preparing a 48-hour flash sale. To absorb the surge, the web operations team plans to add several virtual machine instances to the website tier for the weekend and remove the extra instances once the sale ends. Which scaling pattern does this plan describe?
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Correct answer: Horizontal scaling out and then in, because the number of instances follows demand
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02 — The Myelin Layer · Canonical Discussion
Where the exam tries to trick you — and how those who passed solved it.
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Official Answer (C): Horizontal scaling out and then in, because the number of instances follows demand
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