Forrester estimates that B2B eCommerce will reach $1.8 trillion and account for 17% of all B2B sales in the US by 2023. At the end of 2018, Forrester expects eCommerce to reach $1 trillion, representing 12% of total B2B sales in the US. We're forecasting a compound annual growth rate (CAGR) of 10% in B2B eCommerce over the next five years. This report outlines the potential of the US B2B eCommerce space across 11 durable and non-durable product categories, with historical data going back to 2008.