I can't believe it's enabled by default.

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 ...

Windows’ Delivery Optimization feature, enabled by default in Windows 11, stores update files on users’ PCs to share with other devices over the internet. While designed to improve update speeds and ...

Microsoft's Windows Update for Business Reports now has the ability to show bandwidth savings from Microsoft's Delivery Optimization software delivery feature, according to a Wednesday announcement.