The future potential for IoT is enormous. A large number of innovative services and applications are enabled by the interconnection of large numbers of devices. However, the potential can only be realized if the cost for deploying various solutions is low enough, and various devices are interoperable with each other. An interoperable mass deployment of devices or connected things requires extensive use of open standardized interfaces, protocols, and APIs. The IoT program focuses on these as well as on various non-functional requirements, such as energy awareness and scalability, in order to advance toward the set goals.