Prior to this, the video-sharing platform's ad placements were only on content under YPP that only big creators were a part of. YouTube began testing this in the U.S. in November, now it has announced that this will be extended to all users worldwide.
As a creator outside of the U.S. that’s not in YPP, this means you may see ads on some of your videos. Channels that aren’t in YPP won’t receive a share of the revenue from these ads, though still have the opportunity to apply for YPP as they normally would once they meet the eligibility requirements.
The presence of ads can limit the growth opportunities of small creators, since consumers end up discarding their content. But advertisers may have a greater reach and get lower CPMs.