microG also reimplements the Google Maps APIs (using OpenStreetMaps) and the Location APIs (with different backends, like Mozilla Location Services or a local o

microG also reimplements the Google Maps APIs (using OpenStreetMaps) and the Location APIs (with different backends, like Mozilla Location Services or a local offline database). The main Google-based service is Google Cloud Messaging, which is disabled by default in microG. As you can see, microG doesn't strictly depends on the Google cloud services.