• Microsoft'sWindows Vista is a significant update to the Windows NT operating system. It was the direct successor to Windows XP, which had been launched five years prior, marking the longest period between successive Microsoft Windows desktop operating system releases at the time.
• On November 8, 2006, development was completed, and it was delivered in stages to computer hardware and software manufacturers, business clients, and retail channels over the next three months.
• It was released internationally on January 30, 2007, and it was made available for purchase and download through the Windows Marketplace; it was the first Windows release to be made accessible through a digital distribution network.

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