There is no getting around it. B2B marketplaces are the fastest-growing sales channel in B2B ecommerce, according to data in the forthcoming 2022 B2B Marketplace 400 report from Digital Commerce 360. And a big reason accounting for the rapid growth in online B2B marketplace sales is Amazon Business.

Bank of America Securities projects that in 2022, Amazon Business will post $41.5 billion in gross merchandise volume. That would be up 31.7% from a projected $31.5 billion in 2021. Amazon Business singlehandedly would account for 31.9% of all B2B marketplaces sales, or one in every three transactions, Digital Commerce 360 estimates based on these projections.

As soon as 2025, Amazon Business could post annual gross merchandise volume of about $83.1 billion, says BofA Securities.