Windows Anytime Upgrade

Windows Anytime Upgrade (Add Features to Windows) is an discontinued service by Microsoft introduced in Windows Vista that upgrades across successive Windows Vista editions. Price of upgrades purchased in Windows Anytime Upgrade were lower than prices of upgrades purchased at retail. Windows Anytime Upgrade is launch in operating system Windows 7 and more support on Windows 8 and Windows 8.1 but it's discontinued on October 31, 2015.
History.
In development of Windows Vista, Microsoft introduced Windows Anytime Upgrade has launch in Windows Vista build 4093 and Windows Vista Beta 2. In January 2007, Windows Anytime Upgrade launch on Windows Vista. Windows Anytime Upgrade has support until Windows 7, Windows 8 and Windows 8.1 but no longers has removed on October 31, 2015.