Windows 8

Windows 8 is the basic edition of Windows for the x86 and x86-64 architectures. This edition contains features aimed at the home market segment and provides all of the basic new, Windows 8 features including the Start screen with semantic zoom, live tiles, Windows Store, Internet Explorer 10, connected standby, Microsoft account integration, the Windows desktop and more.
Windows 8 Pro
Windows 8 Pro succeeds Windows 7 Professional and Ultimate[2][3] and is targeted towards enthusiasts and business users; it includes all the features of Windows 8. Additional features include operating as a Remote Desktop server, the ability to participate in a Windows Server domainEncrypting File SystemHyper-V, and Virtual Hard Disk Booting, Group Policy as well as BitLocker and BitLocker To Go. Windows Media Center functionality will be available only for Windows 8 Pro as a free “add-on.”[3]
Windows 8 Enterprise
Windows 8 Enterprise provides all the features in Windows 8 Pro (except the ability to install the Windows Media Center add-on), with additional features to assist with IT organization (see table below).[2]This edition is available to Software Assurance customers, as well as MSDN and Technet Professional subscribers, and was released on August 16, 2012.[4]
Windows RT
Windows RT will only be available pre-installed on ARM-based devices such as tablet PCs,[5] and was named for the Windows Runtime (WinRT) development platform that Microsoft is introducing in Windows 8.[5] It will include touch-optimized desktop versions of the basic set of Office 2013 applications to users—Microsoft WordExcelPowerPoint, and OneNote, and support device encryption capabilities. Several business-focused features such as Group Policy and domain support are not included.
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