The Universal License Terms of Microsoft (applicable to Teams as well) clearly say they don't use customer data (Input) for training: https://www.microsoft.com/

The Universal License Terms of Microsoft (applicable to Teams as well) clearly say they don't use customer data (Input) for training: https://www.microsoft.com/licensing/terms/product/ForallOnlineServices/all#:~:text=Use%20of%20Content,oai/access https://www.microsoft.com/licensing/terms/product/ForallOnli... Whether someone believes it or not, is another question, but at least they tell you what you want to hear.