1) The document discusses the rise of voice assistants and their impact on marketing. It notes that many experts expect artificial intelligence to have a greater impact than social media.
2) It provides 10 steps for marketers to take advantage of voice assistants, including building structured data, owning their brand's "name space" through voice, setting up voice content best practices, building a voice map, measuring customer journeys, collecting data, getting a first mover advantage, deploying a voice app platform, setting expectations, and integrating AI and voice into existing marketing.
3) The key challenges are the fragmentation across different voice assistants and lack of publicly available voice query data.