An e-commerce startup wants its infrastructure to automatically add or remove compute capacity in response to sudden traffic spikes, ensuring performance while avoiding idle resources. Which fundamental cloud concept best describes this capability?
Pay-as-you-go pricing
Elasticity
High availability
Global reach
Elasticity is a core cloud characteristic that enables resources to be scaled up or down automatically and rapidly in response to changes in demand. This keeps applications responsive during peak loads while preventing wasted spending when demand drops. High availability focuses on uptime, pay-as-you-go refers to billing based on actual usage, and global reach describes the worldwide distribution of cloud resources-none of which specifically capture automatic scaling behavior.
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