Thanks for posting here in the Google Nest Community and sorry for the late response.
Good question, let me help you. At Google Nest, our products use data from your connected home devices and services to make them more helpful to you. This means providing Google services and experiences related to the connected home, improving and personalizing them and developing new ones, helping to maintain safety and security across Google services, and keeping you informed of relevant Google products, services, and updates.
You can check this helpful link for more information.
Hope this helps.