Correct Answer : 2009
Explanation : 10gen software company began developing MongoDB in 2007 as a component of a planned platform as a service product. In 2009, the company shifted to an open-source development model, with the company offering commercial support and other services. In 2013, 10gen changed its name to MongoDB Inc.
Initial release date : 11 February 2009
Founders : Kevin P. Ryan, Eliot Horowitz, Dwight Merriman
