IT as a Service (ITaaS) is a technology-delivery method that treats IT (information technology) as a commodity, providing an enterprise with exactly the amount of hardware (IaaS), Operating System/middleware (PaaS), software(SaaS), and support that it needs for an agreed-on monthly fee.

Recently, I read  an interesting article  on how a CIO can reinventt  IT with  ITaaS. Click here to read the full article.