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Be cautious of 'pigeon holing' yourself. Personally, I would start a bit more broad, then find a suitable and enjoyable 'niche' to hone your skills on.
Other areas include cloud configuration/implementation, virualization, and vulnerability management. Though the use of the technology has changed, you're sure to ramp up quickly, if you had decent IT skills beforehand. I think the 'Wow' factor could be with virualization, in addition to all the benefits this technology brings.
To understand vulnerability mangement, may I suggest the following link: Vulnerability Management
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