P2P, or peer-to-peer networking, is usually associated with grabbing illicit copies of movies and albums using BitTorrent (or, of course, those endless Linux distros everyone is downloading...). In Windows 10 Build 10036, however, Microsoft is embracing the technology as an efficient means of delivering software updates to users.
For many years now, using Windows Update to download updates and patches for your operating system has meant download files directly from Microsoft servers. But this new method takes the strain off Microsoft and makes it possible to download some or all of the available updates from other computers.
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