Due to the vast scale and dynamic nature of the programmatic marketplace you should not expect to see your ad in a natural environment. Too many variable conditions need to be met to ensure that your browser should even be a candidate to see the ad. Even when all conditions are met (user behavior, time/day, browser, geo, etc.) the impression is procured in an auction environment where it may be won or lost. Ui.marketing provides an unparalleled level of transparency to see what sites, supply vendors, and browsing environments where your ads were viewed.
To better understand why it’s rare to see your own ad, it’s critical to understand the marketplace you are placing the campaign. To start, there are over 1 billion websites in the universe. The average person, according to Nielsen, only visits about 96 separate domains a month. Who is the target your customer is trying to reach and what geo are they focused on? These factors, and more, are a few reasons why most people do not encounter their targeted ads.
Now that you can imagine billions of websites and hundreds of billions of ad impressions throughout the marketplace, you can then understand why it's unlikely to be delivered an ad you are running for your campaign.