YouTube remains the dominant online video site globally, although competition for the viewer is growing from OTT video and other popular apps. Reach and consumption appear to be slowing in the US and the UK, but YouTube reports strong growth in global watch time as smartphone adoption proceeds. The number and variety of Multi-Channel Networks (MCNs) on YouTube continues to grow. Music video MCN Vevo has so far been the largest single presence on YouTube, but it is being overtaken by the combined Disney/Maker Studios MCN. In contrast to the aggregator MCNs with tens of thousands of channels, studio MCNs have much smaller network sizes and a higher share of owned channels. Their focus on content curation and creation has allowed some to build global audiences of repeat viewers, a unique strength and of significant appeal for advertisers.