How whatsapp earns money ? / Secret business model of whatsapp

WhatsApp needs no introduction today. It has over 2 Billion Users Worldwide and is completely free to use. It was acquired by Facebook (Now Meta) in 2014. But have you ever thought about how does it earn money if it's completely free to use? How did it come into existence? How did it become so famous and dominate similar apps like WeChat, Hike, Line, Viber, etc? Why did the founder of WhatsApp leave the Company? What is the Business Model of WhatsApp? I talk about all these things in this episode of the Business Models Series.