Dynamic Ad Insertion, or DAI, is often referred to in the advertising industry as “Dynamic Creative Optimization” or DCO. Dynamic Ad Insertion expands advanced advertising opportunities by allowing advertisers to target ads that can be swapped in and out of VOD content. Ads can be 15, 30 or 60 seconds in length. The 30 second ads are the most popular in the VOD platform. Ads can be inserted into VOD content through pre-roll, mid-roll and post-roll formats. In more sophisticated examples, the ad placement could be affected by demographic data or usage history for the current user.