This year’s list of Ad Age’s 40 Under 40 honorees, narrowed from nearly 800 entries, doubles as a roadmap of where the marketing world is headed. There are experts in retail media, social media and experiential marketing. There are entrepreneurs in beauty and food and executives from livestreaming and video game advertising. Some honorees are rising through the ranks at established marketing giants such as Anheuser-Busch InBev, Procter & Gamble and Mattel, while others are making their mark by founding their own companies. One honoree founded an agency that advises brands on how to sell on Amazon. Below, click to read more about how they got their start and where they’re headed next.