This thesis aims to identify how present day advertising agencies can compete in an increasingly disruptive technology-driven future. By investigating the early history of advertising and the subsequent modern evolution of advertising technology, it is determined that a new way of creative advertising should evolve with the times. Through the integration of Artificial Intelligence and Big Data with current industry processes, a new kind of advertising agency will emerge that is run like a tech company. Using Big Data to inform creative design and Artificial Intelligence to identify patterns, predictive analysis can be applied to creative online banner ads for the purpose of increasing user engagement through higher click-through rates. This new methodology of data-driven design increases productivity for ad agencies, whilst increasing returns-on-ad-spend for clients. To support the hypothesis of design driven by data, a controlled experiment is carried out with digitally generated online banner ads. A total of 8 generated digital online banner ads were put through a 7 weeks adversarial A/B test on the Google Display Network, with one winning ad determined at the end of the period based on click-through % scoring. Performance data for the ads are presented, as well as a discussion on the implications of the findings, specifically on the positive potentials of data-driven design and the importance of ad agencies becoming like tech companies. The research is structured in 7 chapters: (1) A Historical Perspective on Modern Advertising, looking at the way creative advertising agencies have evolved throughout the earlier years, (2) Present Day Advertising Technology, continuing the narrative postinternet through exploration of the advertising technology industry in present day, (3) Consumer Psychology, specifically on how creative design attributes in ads, such as visuals, text and sound, can subconsciously have an effect on humans and are important of 11 121 sophisticated product even if said consumers did not read the content of the ad in its entirety (Ogilvy, 1985). This trend of the bygone era gave rise to the predominance of copy-driven ads, as various agencies all rushed to copy from each other.