MongoDB is coming to London and we want to see you there, where two free day-passes will be given away by sharing a photo of your MongoDB mug on Twitter with the hashtag #mongodbmug. The event will feature a variety of presentations and talks from industry experts on various use cases and best practices for using MongoDB. Notable speakers include Eliot Horowitz, Gary Collier, James Stewart, and Robert Hill, who will discuss topics such as digital transformation, building real-time views of business data, and improving financial data management. The event also includes an "Ask The Experts" hall where attendees can get answers to their toughest questions about MongoDB.