CIOs are increasingly assured that a cloud-first strategy is the way to go. Analyst firm Gartner says global spending on public cloud services will grow 21.4 percent through 2018 to total $186.4 billion, up from $153.5 billion in 2017.

So, why are CIOs choosing to push as workloads in the cloud? There are three reasons that make the cloud attractive—and not one of them is cost.

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Reason No. 1: Better holistic security

I’m sure this causes some heads to spin. How can there be better security in the public cloud than in your own data center?

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