https://www.entrepreneur.com/article/368105

Many social networks started off focusing on personal relationships and connections centering around lifestyles. However, companies like Facebook, Twitter, Instagram and Snapchat realized the value of inviting businesses and brands to participate in their social networks to connect them with consumers. 

WhatsApp has joined in by offering WhatsApp Business, a free app for small business owners and startup founders that can be used on Android and iOS mobile devices. The app offers a way to interact and engage with customers in a direct, personal and targeted way.