Now this I did not know and to be honest I can see why Microsoft might be keeping quiet/not publicising it...LOL
"Windows 10 upgraders may not be aware of a new addition to Windows that has the features of a torrent client. It’s called Windows Update Delivery Optimization (WUDO).
WUDO is a peer-to-peer delivery system that allows Microsoft to upload the Windows 10 bits stored on your system to PCs around the world. It is an ingenious way to spread the load of distributing Windows updates and also apps. Unfortunately, it is enabled by default on most home systems and not everybody is happy about that. If you are concerned about using your upload bandwidth or just leery about connecting to a bunch of unknown computers, here is how to disable WUDO."
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