WhatsApp Business API: The Complete Guide The WhatsApp Business API is a powerful tool that empowers businesses to engage with their customers more effectively and efficiently on the popular messaging platform, WhatsApp. With over 2 billion users worldwide, WhatsApp has evolved from a simple messaging app to a versatile platform for communication, customer support, and marketing. The WhatsApp Business API provides businesses with the means to tap into this vast user base and establish meaningful connections with their customers. In this complete guide, we will explore the key features, benefits, and implementation of the WhatsApp Business API.