What are the reasons to choose between reserved and on demand instances ?

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 Q1. What are the reasons to choose between reserved and on demand instances ?Server
Ans. In terms of compute options and configurations, Reserved Instances and On Demand instances are the same. The only difference between the two is that a Reserved Instance is one you rent (reserved) for a fixed duration, and in return you receive a discount on the base price of an On Demand instance.

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