We use WhatsApp for many things. Initially, the platform—now owned by Meta—was only for sending messages; later, it was updated to support voice and video calls; and today, it’s common to use it to send documents, proposals, and even contracts. 

Now Meta is taking it a step further. In early March, the Central Bank of Brazil approved the use of Meta's payment platform by small and medium-sized businesses in the country via WhatsApp. 

Meta is using Brazil as a testing ground for its business messaging service, as part of a strategy aimed at offsetting the decline in advertising revenue. Brazilians have been able to make payments via WhatsApp since 2021, but only between individuals. Now they will be able to make payments to small and medium-sized businesses through the platform.

https://www.reuters.com/technology/brazil-central-bank-greenlights-metas-whatsapp-merchant-payment-system-2023-03-02/