The Start menu is one of the most visible parts of Windows, and so we don't take any changes we make to it lightly. The environment around Windows has changed immensely since we first introduced the Start menu, and we want to make sure we're still delivering an experience that is both relevant and tuned to the dynamic computing world we live in today. The evolution of the Start menu is inextricably linked with the development of several other related, but disparate concepts, such as application launching, application switching, system notifications, and gadgets. The history behind these and the divergent paths they have each taken create an opportunity for us to do a much better job in providing a cleaner, more powerful, and more uniform way of working across the wide variety of apps and PCs we use today. The new Start screen embodies this effort.