The document discusses how marketers are increasingly investing in digital advertising platforms like Google, Facebook, and Amazon but are taking a "set it and forget it" approach that misses growth opportunities. It recommends that marketers get specific with optimization efforts, focus on machine learning and incrementality, balance short-term efficiency with long-term growth, and make platforms work for their business rather than using the same interfaces as everyone else. The key is having a strategic mindset when running digital media instead of just focusing on the cheapest users.