Chinese e-commerce company Alibaba Group is larger than eBay (EBAY) and Amazon combined when comparing gross merchandise volume, a measure roughly equal to gross sales. Alibaba is slated to eclipse Walmart in sales in five years.

The company has played a key role in the complex economic ties between China and the Bay Area, allowing U.S.-based businesses to tap into the Chinese market in much easier ways than were once possible.

On Nov. 11, the largest online shopping day in China, Alibaba's Tmall and Taobao Marketplace sites pulled in $3.06 billion in revenue, more than the sales generated online during Black Friday and Cyber Monday combined in the United States last year.

Taobao and Tmall have more than 500 million registered users, the company says.

Alibaba.com has 36.7 million registered users from more than 240 countries and regions. It has more than 2.8 million supplier online storefronts and more than 5,900 product categories.

Between 2008 and 2012, Alibaba.com's U.S. registered users grew from 1.3 million to 6.2 million.