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Horizontal scaling means

  • A.adding more instances of the same size
  • B.moving the workload to a much larger instance
  • C.attaching more storage to the existing instance
  • D.increasing the request timeout on the balancer

Answer: A

Vertical scaling means moving to a bigger machine and eventually runs out of machine. Horizontal scaling has no such ceiling but requires the application to be built for it. Most cloud designs therefore favour many modest instances over one large one.

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