MongoDB Day Austin is an upcoming conference on March 27, hosted by GeekAustin and sponsored by 10gen, offering sessions for MongoDB users of all levels. The event features presentations from notable figures in the MongoDB community, including David Strauss and Mathias Stearn. With introductory to advanced topics covered, attendees can expect a comprehensive experience focused on using MongoDB effectively. Tickets are selling out quickly, making it essential to register in advance by visiting the provided link.