Eventhough there are millions of content creators and streamers on Twitch,ads are only shown on what channels?

Twitch displays ads exclusively on Partner and Affiliate channels. These are creators who have met specific criteria for viewership, streaming frequency, and content quality, and have entered into an agreement with Twitch. This monetization model allows Twitch to share ad revenue with these creators, incentivizing them to produce content and grow their communities. Channels that are not Partners or Affiliates, such as new streamers or those who haven't met the program requirements, do not have ads run on their streams. While Sports and Just Chatting are popular categories, ads are not tied to categories but to the creator's status. Product-sponsored channels might feature sponsored content, but Twitch's platform-wide ads are still limited to Partners and Affiliates.