The Internet of Things (IoT) includes billions of things, i.e., connected objects and devices that are heterogeneous, distributed, and possibly intelligent and run applications and services from the Internet of Services (IoS). Things span, for instance, RFID tags, sensors, computers, plants, lamps, autonomous robots, and self-driving vehicles. Often, things are connected through heterogeneous platforms also providing support for, e.g., data collection, management, and applications deployment. Additionally, things can offer their functionalities as (web) services facilitating their dynamic interaction.