Hello,
Thank you for your question.
The option to share Windows updates peer-to-peer (P2P) with other computers on your local network or with other computers over the Internet. Allowing others to download parts of Windows updates from your computer.
We have a similar subject with a similar to this, I recommend that you consult it to better understand it, go to it on the links below:
https://learn.microsoft.com/en-us/windows/deployment/update/waas-delivery-optimization-setup
https://learn.microsoft.com/en-us/windows/deployment/update/waas-delivery-optimization-reference
-----------------------------------------------------------------------------------------------------------------------
--If the reply is helpful, please Upvote and Accept as answer--