Pankaj Joshi presented on WhatsApp Messenger, the largest instant messaging app with over 1 billion active users. Founded in 2009 by Jan Koum and Brian Acton, former Yahoo employees, WhatsApp was acquired by Facebook in 2014 for $19.3 billion. The presentation covered WhatsApp's origins, current usage statistics like 1.6 million photos and 42 billion messages shared daily across 53 supported languages, its key competitors, features, and future plans.