What is a solution provider?
From time to time, a business may use a solution provider to help provide the tools it needs to send and receive messages from you. These solution providers may provide services such as reading, storing, and responding to messages on the behalf of the business.
Some businesses and solution providers1 will use WhatsApp’s parent company, Facebook, to securely store messages and respond to customers. While Facebook will not automatically use your messages to inform the ads that you see, businesses will be able to use chats they receive for their own marketing purposes, which may include advertising on Facebook. You can always contact that business to learn more about their privacy practices.
1 In 2021.