How does the official version of Windows 10 use bandwidth to distribute updates to other users?

Sometimes many users have joined the feast of Windows 10, especially Windows 7/8.x users can upgrade for free, in addition to privacy issues, there is a place worth noting: Windows 10 by default The system will share updates with other devices on the internet through your network connection. This feature is called Windows Update Delivery Optimization and is enabled by default in Windows 10 Home and Professional to give users faster updates. Enterprise and Education Editions also have this feature, but only for local networks.

This function is basically a common seed network: it is to use your computer as a node for system update propagation, and to transmit updates to other users faster through peer-to-peer networks. This is very good. The idea, unless your network is restricted.

It is natural to turn off the WUDO function, but it is a bit fuzzy in the setup options. The user first accesses the Windows Update entry through the setup menu, and selects the “Select how to provide updates” option in the advanced options.

Microsoft said that these distribution options will not download or distribute personal data, but will only send the updated "partial" cache, but it will be obviously unfair to users who are not very fast.