Windows 8 can run on desktops, laptops, or tablets like the Surface. It has a Start screen with customizable tiles for launching apps and a desktop. Users can navigate apps by swiping or clicking on tiles, edges, and charms. Windows 8 allows for multiple user accounts and connects to the cloud with a Microsoft account. It includes many built-in apps and allows users to download more apps, though app functionality may differ between laptop and tablet interfaces. Users can run apps simultaneously, update apps automatically or manually, and shut down or sleep their device running Windows 8.