It's 2017: that means that we're just three years away from 2020, the year Forrester Research predicted that business-to-business (B2B) e-commerce sales would top $1.1 trillion. Strong revenue growth isn't the only thing that's changing for online professional sales, though. If you're currently or planning to sell to professional buyers online, you simply cannot afford to ignore the increasing consumerization of B2B web stores.