This 3-paragraph document provides an overview of how big data and digital marketing can be used together. It introduces Sofian Hadiwijaya as the author and expert on this topic. The document then defines data and big data, discusses how tracking tools and analytics frameworks are used, and examines problems that big data can help address, such as generating ads, adjusting bids, and reporting. Finally, it outlines an architecture for applying big data to digital marketing and discusses keyword expansion techniques.