In this article, the author discusses the accessibility features of Microsoft's Windows Vista. One of the most innovative aspects of Windows Vista is a new accessibility and automated testing model called Microsoft UI Automation, which reduces development costs not only for accessible and assistive technology (AT) developers, but also for application developers who make their software compatible with AT products such as screen readers for people who are blind. He believes Microsoft is correct when it says its UI Automation improves product quality by providing increased testing support and a new way of doing automated UI testing for software developers. Other accessibility models rely on a single interface that must serve dual purposes: exposing UI information about applications and collecting information needed by AT products. Microsoft's UI Automation separates the two models, with one for application developers and another for AT developers. He also outlines the major accessibility improvements in Windows Vista, which are the Ease of Access Center, state-of-the-art speech recognition and magnification capabilities.