The examples included in this SDK demonstrate communication between the development kits and the cloud service. The Constrained Application Protocol (CoAP) is used to exchange information.
Examples here use Exosite as the cloud provider.
Exosite is a technology company focused on connecting devices and systems. Exosite Portals is a web application that lets people connect and manage devices and data.
You may create a free account on Exosite Portals that you can use to connect devices and build small IoT projects.