Google Messages is Google's text messaging app for Android. It handles SMS and MMS as well as RCS chats, the newer messaging standard, and allows media sharing between compatible devices. It is delivered as a mobile app and is governed by Google's general privacy policy. Google describes the app on its product page as a simple, helpful text messaging app.
Google LLC is a US company. Google's privacy policy states that the company maintains servers around the world and that personal information may be processed outside the user's country, without listing the countries that hold messaging data. The policy also names Google Ireland Limited as one of the providers of consumer services in the EU. Because the provider is established in the United States, it remains subject to US legal demands, including the CLOUD Act, whatever the location of its servers. The app is proprietary and is not available for self-hosting. European organisations that use Google Messages for work communications should review the processing terms and device management arrangements before deployment.