Windows 10

Windows 10 is a personal computer operating system released by Microsoft as part of the Windows NT family of operating systems. It was officially unveiled in September 2014 following a brief demo at Build 2014. Microsoft described Windows 10 as an 'operating system as a service' that would receive ongoing updates to its features and functionality, augmented with the ability for enterprise environments to receive non-critical updates at a slower pace, or use long-term support milestones that will only receive critical updates, such as security patches, over their five-year lifespan of mainstream support. On June 1, 2015, Microsoft first announced that Windows 10 would be released on July 29, 2015.Microsoft began an advertising campaign centering around Windows 10, "Upgrade Your World", on July 20, 2015 with the premiere of television commercials in Australia, Canada, France, Germany, Japan, the United Kingdom, and the United States.

Features
Windows 10 harmonizes the user experience and functionality between different classes of device, and addresses shortcomings in the user interface that were introduced in Windows 8.Windows 10 Mobile, the successor to Windows Phone 8.1, shares some user interface elements and apps with its PC counterpart.
On Windows 10, Windows Store serves as a unified storefront for apps, Groove Music (formerly Xbox Music), and Movies & TV (formerly Xbox Video).Windows 10 also allows web apps and desktop software (using either Win32 or .NET Framework) to be packaged for distribution on the Windows Store. Desktop software distributed through Windows Store is packaged using the App-V system to allow sandboxing.
 New iteration of the Start menu is used on the Windows 10 desktop, with a list of places and other options on the left side, and tiles representing applications on the right. The menu can be resized, and expanded into a full-screen display, which is the default option in Tablet mode. A new virtual desktop system was added. A feature known as Task View displays all open windows and allows users to switch between them, or switch between multiple workspaces.