The documents discuss several challenges in modern marketing, including the fragmentation of media consumption making it difficult to allocate budgets effectively, and the large number of disparate channels making it hard to drive efficient awareness. Mobile experiences are generally poor with lower conversion rates. Additionally, discovering the proper audiences to target and attributing engagement across touchpoints is challenging. Some successful channels mentioned include paid search, influencer marketing, affiliates, and social advocacy programs. Amazon is described as both a threat due to its size and a helpful marketing partner for its targeting and retail search options. Native advertising and voice platforms are identified as overhyped due to difficulties in measurement and driving adoption.