On the face of it, reserving cloud capacity in advance seems like a no-brainer.

After all, the promised cost savings can be compelling.

Customers purchasing Amazon EC2 Reserved Instances, for example, can save up to 75% of the costs of buying on-demand instances when needed.As is so often the case with such tantalizing benefits, however, the cost savings of reserved instances come with a catch: purchasing the wrong types or the wrong number of instances can, over time, prove confining and even wasteful. You don’t want to be locked an instance’s older technology as new innovative instances materialize. Nor do you want to pay up front for capacity that ends up exceeding your actual needs.To read this article in full, please click here

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