What does it mean to host channels on Twitch?

What does it mean to host channels on Twitch? Host mode gives all broadcasters the ability to host another channel’s live broadcast on his or her own channel page without changing your chat, allowing for your viewers to discover content you choose while interacting with you in your chat room! Any broadcaster can host another channel, and any channel can be hosted.

Host mode gives all broadcasters the ability to host another channel’s live broadcast on his or her own channel page without changing your chat, allowing for your viewers to discover content you choose while interacting with you in your chat room! Any broadcaster can host another channel, and any channel can be hosted.
See also  How does PHP server work?