The document discusses how consumers now use multiple devices and channels throughout the shopping process. It notes that consumers begin on devices like smartphones and laptops by researching products online through search and social media. They then move to other devices like TVs to continue learning about products through video. The document also provides strategies for marketers to engage consumers across various devices and channels like search ads, display ads, email marketing and social media advertising. It emphasizes meeting consumers across all the touchpoints in their multi-device journey.