Venky Harinarayan is an entrepreneur and investor. He was a founder of Junglee—a pioneering shopping search engine that was acquired by Amazon.com, a founder of Kosmix—an innovative search and categorization company that was acquired by Walmart Stores, Inc., and a founding investor in Efficient Frontier—a leading search and social media marketing company that was acquired by Adobe. Together, these start-ups were valued at $1 billion at the time of their acquisition. Venky has also played the role of entrepreneur in two of the most successful retailers of our times — Walmart and Amazon.com. Most recently, at Walmart, as Senior Vice President of Global e-Commerce, Venky created and ran @WalmartLabs, the innovation arm for the world's largest company. At Amazon.com, Venky helped create the Marketplace business, that today accounts for more than half of all the units sold. He also invented the concept underlying Amazon's Mechanical Turk.