What are YouTube Ads? YouTube ads are video promotions that appear on the channel’s website and app, as well as on its partner sites known as the Google Display Network (GDN). Because YouTube is part of Google, its advertisers benefit from the depth of Google’s user data. This information—gathered from viewers’ Google search histories and their YouTube viewing habits—can be used to narrowly focus an ad campaign. 6 Types of YouTube Ads: In-feed ads An in-feed ad, formerly known as a video discovery ad, appears  as if it’s a regular search result, just with a little more information so you know it’s an ad. The ultimate