Microsoft uses other Windows PCs to distribute Windows Updates but fortunately you can disable this setting and maximize your computer's bandwidth.

Windows quietly uses every PC running it as a node in a peer-to-peer file-sharing network for system updates, and most users have no idea it is happening. The feature, called Delivery Optimization, ...

These are the Delivery Optimization settings you need to know to deliver feature and security updates without using Windows Software Update Services. Windows 10 added Windows Update Delivery ...