WhatsApp Business API

Scale your customer engagement: Programmatically send rich, interactive messages and notifications to 2 billion global users via the official Meta API.

This is the WhatsApp Business Platform (API): It’s the secure, scalable solution for medium-to-large enterprises. Use the Cloud API and Business Management API to integrate WhatsApp messaging directly with your CRM or backend systems (e.g., Salesforce, Zendesk). Send automated notifications (order confirmations, shipping updates) using pre-approved templates or engage in two-way customer service conversations within the 24-hour window. This platform ensures high-volume, personalized communication across 180+ countries.

https://developers.facebook.com/docs/whatsapp/overview