Cloud IoT Core is a fully managed service provided by Google Cloud that allows users to securely connect and manage IoT devices. It enables the collection and analysis of data from these devices, making it easier for businesses to gain insights and improve operations. With Cloud IoT Core, devices can send data to the cloud, where it can be processed and stored. The service supports various protocols, ensuring compatibility with a wide range of devices. This helps organizations streamline their IoT solutions and enhance their ability to monitor and control devices remotely.