What is a YouTube Network
A YouTube Network or Multi-Channel Network is an organization that helps its partners grow by the use of their connections and knowledge of YouTube's features and algorithm.
It's in their best interest to help the partner grow their channel and revenue, as their monetization comes from a revenue-share with their partners. The Network will set up strategies for the YouTube partner and use its resources and system to address any number of problems and boost the partner's performance while having them keep their freedom.