The caveat with cloud is that enterprises must carefully evaluate payment models to ensure that a cloud deployment can really save them money in the long run. Cloud security is still a concern as well, but significant advances in this area are being made as vendors rush to fill security needs as quickly as they arise.
To go back to the original premise then, sustainability is as much about protecting the business as it is about growing revenue and profit margins. While "protection" is often equated with security -- mitigating obvious threats to systems, resources and IP -- in a broader sense, it's about ensuring that the company can maintain the integrity of its brand and ensure its competitive advantage. This is essentially what is meant by sustainability -- and it will be the focus of CEOs in 2013.
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