Years of irrelevant marketing has made one thing clear: ads are more meaningful when tailored to consumer interests. Relevance and personalization in ads can increase consumer brand awareness, recall and affinity. It also leads to action. A recent report from Segment found that personalization caused consumers to make an unplanned purchase, spend more than planned, and become a repeat customer. To activate this kind of large-scale relevant marketing, it’s important to recognize personalized brand experiences are best achieved by choosing ad slots based on the user, not the content. And this approach is powered by programmatic.