Founded in 2008, Groupon is one of the fastest-growing companies in Internet history with local deals offered to over 35 million subscribers in more than 43 countries. The discount service phenomenon helped ignite a new consumer revolution and online commerce business model that caught the eye of Google back in 2010 with a staggering $6 billion buyout offer.

So why did the company turn down Google’s offer? And how can the company maintain its competitive edge against other on-line competitors? Hear the story behind this savvy start-up.