WhatsApp Business Platform is an enterprise messaging API from Meta for medium and large businesses that want to engage customers on WhatsApp at scale. It lets brands use WhatsApp as a secure, two-way channel for marketing, sales, support, and notifications while integrating with their existing tech stack. Teams can automate customer journeys with message templates, chatbots, and routing to live agents, send order and shipping updates, run personalized promotions, and support conversational commerce directly inside WhatsApp. The platform also supports verifications and one-time passwords, making it suitable for high-volume transactional and authentication use cases.