Online markets that are owned and operated by a single company and that are either sell-side or buy-side are known as Ecommerce Chapter 2 Online markets that are owned and operated by a single company and that are either sell-side or buy-side are known as A) B2B marketplaces. B) commercial portals. C) e-malls. D) private e-marketplaces. Answer: D Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+