Cloud · Flashcard
You need 200 servers for one afternoon. What makes the cloud fit?
- AResources come on demand and are billed only while they exist
- BHardware costs less per server than buying the same machines
- CCapacity is reserved in advance for the afternoon you name
- DServers are shared, so each one costs a fraction of the price
Why this is the answer
The defining property is on-demand self-service with usage-based billing: you take 200 instances when you need them and stop paying when you release them, which is impossible when capacity has to be bought. It is not primarily a per-unit discount, and nothing has to be reserved ahead — reservations are a separate pricing choice for steady workloads.
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