Mobile-first design has been a best practice for a while, and Google is finally about to support it with mobile-first indexing. But mobile-first design and mobile-first indexing are not the same thing. Mobile-first indexing is about cross-device accessibility of information to help integrate digital assistants and web-enabled devices that don't even have browsers, to achieve Google's larger goals. Learn how mobile-first indexing will give digital marketers their first real swing at influencing Google's new AI (Artificial Intelligence) landscape. Marketers who embrace an accurate understanding of mobile-first indexing could see a huge first-mover advantage, similar to the early days of the web, and we all need to be prepared.