Dive Brief: 

• AOL is challenging Facebook's Atlas with its own system that can track 100 million users across devices from mobile to tablet to desktop. 
• The combining of AOL ad platforms Adap.TV and AdLearn Open Platform will create one system called One. 
• According to research from comScore, AOL's One has a 93% accuracy rate in reaching the intended target across different devices. 

Dive Insight: 

For some time now, advertisers have been searching for data that helps pull together activity across devices. Now the competition is heating up to see which ad platform can deliver the most accurate and effective data across devices. This heavy competition will not only be interesting to watch, but will also help each competitor reach new heights.