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      Question

      What is 'cloud elasticity' vs 'cloud scalability'?

      A Elasticity always increases storage capacity of the cloud; scalability always increases processing power of the cloud Correct Answer Incorrect Answer
      B Elasticity applies to virtual machines; scalability applies to databases only Correct Answer Incorrect Answer
      C Elasticity is automatic short-term resource adjustment matching real-time demand; scalability is the system's ability to handle growing workloads through resource addition Correct Answer Incorrect Answer
      D Elasticity is a security feature; scalability is a performance feature Correct Answer Incorrect Answer
      E There is no meaningful difference — the terms are used interchangeably Correct Answer Incorrect Answer

      Solution

      Scalability is the designed capacity to handle increased load by adding resources (proactive, planned). Example: Upgrading bank servers before a known large IPO subscription period. Elasticity is dynamic, automatic scaling up and down in real-time based on actual demand (reactive). Example: Auto-scaling bank's mobile banking servers during peak hours and releasing resources at night. Elasticity minimizes waste. Both are key cloud benefits that traditional on-premise infrastructure cannot easily provide.

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