Without a doubt, grocery was the online retail category most positively affected by the pandemic. However, as the US returns to “normal,” the rate of growth in 2021 of online grocery sales has slowed substantially compared to the growth in 2020. Forrester partnered with IRI for the data in this research, which showcases the grocery subcategories that have grown fastest, the distribution of online grocery delivery formats, and the retailers that have gained the greatest share.