The document provides a guide for marketers to transition to a digital-first strategy due to the impacts of COVID-19, emphasizing customer obsession and adapting marketing efforts to shifting consumer behaviors. It outlines the expected declines in advertising and services, while recommending investments in customer insights and agility for long-term recovery and growth. Marketers are advised to prioritize customer experience, maintain marketing efforts, and innovate in their approaches to build resilience during and after disruptions.