Windows 7 is the successor to Windows Vista . The new OS introduces a compelling combination of welcome innovations and much-needed polish. Windows 7 is built with the codebase from Vista and is a minor upgrade (6.1) in the NT series of operating systems from Microsoft. Windows XP Mode and Windows Virtual PC, available ONLY on Windows 7 Professional and Windows 7 Ultimate, allow you to run multiple Windows environments, such as Windows XP Mode , from your Windows 7 desktop.
All editions of Windows 7 can make System Images without additional system backup programs, which were necessary for system backups of Windows XP or Vista.