Small- to medium-sized merchants grew at a higher rate in 2021 compared with the Digital Commerce 360 Top 1000 retailers, which are large, well-known merchants like Amazon.com Inc. and Walmart Inc. That’s a departure from 2020, when the Top 1000 retailers experienced explosive ecommerce growth of 44.8% compared with the Next 1000’s 19.9%. In 2021, the Next 1000 grew 22.8% collectively compared with the Top 1000’s more muted 15.7% growth.