Delivery Optimization, or WUDO, allows your PC to receive updates from Microsoft's server and other sources.
You can delete the Delivery Optimization files to save disk space without affecting performance, but doing so may slow down the Windows update process.
To delete Delivery Optimization files in Windows 11, you can use the Disk Cleanup tool to remove unnecessary files.
After deleting the files, you can also turn off Delivery Optimization entirely in Windows 11 to manage your network settings.