The largest MongoDB conference to date, MongoSV, took place with over 1,100 developers in attendance. The conference kicked off with the introduction of the MongoDB Masters program, which brought together MongoDB evangelists from around the world. At the opening keynote, 10gen CTO Eliot Horowitz showcased a Twitter app that utilized the new aggregation framework expected for the upcoming MongoDB 2.2 release, gathering tweets by recency and most retweets. The conference featured presentations on various topics, including X.commerce's new open source developer platform, integration with Azure, and Disney's deployment of 1400 Mongo instances. Overall, the event highlighted significant developments in the MongoDB ecosystem.