Marketers, take warning: Data deprecation and the fallout from the COVID-19 pandemic will reshape advertising and compete for your attention in 2021 — but the pandemic will take precedence. An AI-fueled ad creation frenzy will double investments in brand-owned virtual influencers, and a smorgasbord of new pandemic advertising, from videoconferencing pre-roll ads to sponsored face masks, will emerge. In this report, we explore Forrester’s predictions for advertising in 2021.