WhatsApp is a messaging platform that allows users to send text messages, make voice and video calls, and share media files over the internet. It is widely used for both personal and business communication due to its simplicity, end-to-end encryption, and cross-platform availability.

The WhatsApp API enables businesses to integrate WhatsApp into their customer communication channels, facilitating automated and personalized interactions. This API is commonly used for customer support, notifications, and marketing by enabling chatbot functionality, message templates, and integration with CRM systems. WhatsApp Business API, in particular, is designed for larger enterprises to streamline customer engagement and provide a secure communication environment.