WhatsApp Business API is a tool that allows businesses to communicate with their customers on WhatsApp. With the API, businesses can send notifications, alerts, and customer support messages to their customers on WhatsApp.

Here are some key features of the WhatsApp Business API:

1. Two-Way Messaging: With the API, businesses can send and receive messages to and from customers on WhatsApp.

2. Templates: The API allows businesses to create message templates for common use cases like order confirmations, shipping updates, and appointment reminders.

3. Automated Messages: Businesses can use the API to send automated messages to customers based on triggers like abandoned carts, new leads, or ticket updates.

4. Rich Media: Businesses can send images, videos, and other rich media content to customers on WhatsApp.

5. Secure and Private: All messages sent through the WhatsApp Business API are encrypted and secured.