Windows 7 worked on Windows 7. These were broadly divided into "core operating system" and "Windows client experience", in turn organized into 25 teams of around 40 developers on average. In October 2008, it was announced that Windows 7 would also be the official name of the operating system. There has been some confusion over naming the product Windows 7, while versioning it as 6.1 to indicate its similar build to Vista and increase compatibility with applications that only check major version numbers, similar to Windows 2000 and Windows XP both having 5.x version numbers. The first external release to select Microsoft
Management features new to Windows Vista also install updates to an offline Windows image, including updates, boot-critical device drivers, and language packs. Windows Vista introduced Component-Based Servicing (CBS) as an architecture for installation and servicing. The deployment of Windows Vista uses a hardware-independent image, the Windows Imaging Format (WIM). The image file contains the necessary bits of the operating system, and its contents are copied "as is" to the target system. Other system specific software, such as device drivers and other applications, are installed and configured afterwards. This reduces the time taken for installation of Windows Vista. Corporations can author their own image files (using the