From the review: "Vista is both broad and deep, with major new features and functionality. Architecturally, it's based on the NT platform that has provided the underpinnings of all mainstream Windows versions for more than a half decade. That suggests that Windows Vista is only an evolutionary upgrade over Windows XP. But don't be deceived: In Vista, Windows has been completely deconstructed and rebuilt as a more elegant componentized system that can be secured and deployed far more easily. The ramifications of this work will reach far into the future, but what all this means to me is that Windows Vista is a major Windows update that deserves your attention. It is, at turns, both revolutionary and evolutionary."