Cloud IoT Core is a fully managed service. This ensures that you don’t need to do autoscaling, replication configuration, database partitioning, or pre-provisioning of resources. One or millions of devices can be connected and Cloud IoT Core can scale to suit your needs.
Cloud IoT combines the highest security level of the MQTT protocol (TLS 1.2 with certificates), and its single GLOBAL endpoint (mqtt.googleapis.com). You do not need to determine the location of the device when interacting with a device, and you do not need to duplicate its configuration in each area. The data is published automatically to Cloud Pub / Sub and is accessible globally.
The Device Manager allows you to update and control devices.