WhatsApp Coexistence is the connection between the business’s existing WhatsApp Business app account and the WhatsApp Business Platform. This enables businesses to use the app and the API at the same time. With this integration, businesses can still use the WhatsApp Business app for individual, personal messaging, and the WhatsApp Business Platform for the larger scale — customer support, but all under the same platform. The upside here is that the two systems operate together, sharing all message history and contacts, which means businesses never lose any important customer communication.