This article provides a general overview of the technology of modern high performance windows as well as information on traditional glazing options, features and benefits. In addition, it explores improvements to conventional mirrored and tinted glazing and look at how color, style and glazing options impact not only occupants but also aesthetics of a project. Finally, we examine recent advancements in electrochromic coatings, how they work and how programmable tinting can positively impact occupants and energy efficiency in commercial buildings.