With more than $5 trillion in sales at stake in the grocery category, both offline and online retailers are fighting for their share of the biggest prize in retail. As consumers begin to embrace buying groceries online, we expect the global online grocery market to grow at a compound annual growth rate (CAGR) of 17% from 2017 to 2022. In this report, we discuss the adoption of online grocery in 27 countries, the business models that online grocers are adopting, the impact of smart speakers on digital grocery sales, and the five-year forecast for this sector.