Google Earth is an application for viewing high-resolution satellite imagery, exploring 3D terrain and buildings in many cities, and using Street View on a virtual globe. It comes in three versions: Google Earth in a web browser, mobile apps through Google Play and the App Store, and Google Earth Pro for desktop, with import and export of GIS data and historical imagery. The service is not open source.
Google Earth is a product of Google LLC, part of Alphabet, which is headquartered in the United States, so it falls under US jurisdiction, including the CLOUD Act. Google's general privacy policy says it operates servers around the world and that information may be processed outside the country where you live; no specific hosting region for Earth is published. The policy does not mention the GDPR by name. For European organisations, note that this is a consumer service: those who want to use sensitive location data or their own map layers should assess for themselves whether a US service is appropriate.