This is difficult to assess, because you have to factor in elements like the total amount of revenue generated by e-commerce, as this can vary greatly depending on the size of the business, the products or services offered, and the region in which it operates. However in the United States, E-commerce sales represented a significant portion of total retail sales in 2021, estimated at around 22.9%. Globally, E-commerce revenue clocked in at approximately $4.9 trillion in 2021, and it is estimated to reach $6.5 trillion by 2023.