WhatsApp is an American cross-platform messaging service. Whatsapp Initial release January 2009. which was acquired by Facebook in February 2014 for approximately US$19.3 billion. It became the world’s most popular messaging application by 2015, and has over 2 billion users worldwide as of February 2020.
WhatsApp Web, in late January 2015 through an announcement made by Koum on his Facebook page: “Our web client is simply an extension of your phone: the web browser mirrors conversations and messages from your mobile device—this means all of your messages still live on your phone”. Now WhatsApp’s also accessible from desktop computers, as long as the user’s mobile device remains connected to the Internet while they use the desktop app.
WhatsApp released a standalone business app targeted at small business owners, called WhatsApp Business, to allow companies to communicate with customers who use the standard WhatsApp client.
India is by far WhatsApp’s largest market in terms of total number of users.