Online marketplaces Amazon.com and Alibaba have set their sights on the B-to-B commerce market. Just as they've done with B-to-C commerce, they're transforming the customer experience — an area which some in the B-to-B market have long struggled with — to be more responsive to preferences and habits. Merchants are already feeling the impact of their influence in the B-to-B domain, and the depth and breadth of their efforts will only continue to grow in the years to come.