Johnny Boufarhat was fed up. A rare allergic reaction in 2015 left him with a misfiring immune system, making him crave in-person contact as he stayed inside to avoid further health flare-ups.That frustration led him in early 2019 to start writing code in his London apartment’s kitchen for an online events platform that became Hopin Ltd, which allows users to attend break-out sessions during events and network with attendees through automated one-on-one video meetings.Boufarhat’s stake is now worth about $3.2 billion, making him one of the world’s youngest self-made billionaires, according to the Bloomberg Billionaires Index.Boufarhat was born in Australia to parents from Lebanon and Armenia, but moved as a teenager to the U.K.Read the full story on NDTV.