Windows 10 -is a series of operating systems produced by the American multinational technology company Microsoft and released as part of its Windows NT family of operating systems. It is the successor to Windows 8.1 (2013), released nearly two years earlier, and was released to manufacturing on July 15, 2015, and broadly released for the general public on July 29, 2015.Windows 10 was made available for download via MSDN and Technet and available as a free upgrade for retail copies of Windows 8 and Windows RT users via the Windows Store. 
One of Windows 10’s most notable features is its support for universal apps, an expansion of the Metro-style apps first introduced in Windows 8. Universal apps can be designed to run across multiple Microsoft product families with nearly identical code‍—‌including PCs, tablets, smartphones, embedded systems, Xbox One, Surface Hub and Mixed Reality.
The Windows user interface – Windows is by far the most popular operating system for desktop computers, with over a billion active PCs running it. Microsoft has worked hard to recover from disastrous releases like Vista and Windows 8 and responded by adding state-of-the-art capabilities like touch input, a voice-based virtual assistant, face login, and mixed reality along with updated tools for more pedestrian things like taking screenshots, arranging windows, and getting notifications.