Lack of interoperability between Internet of Things (IoT) platforms, systems, and applications is one of serious problems that prevents its even more rapid adoption. As long as individual IoT platforms cannot meaningfully communicate with each other, the vision of a global IoT ecosystem will not be realized. While the problem of IoT interoperability can be considered at different levels, starting
... [Show full abstract] from hardware interoperability at the bottom of the stack, we are interested in the semantic interoperability, which can be seen as the meta-level for all interoperability considerations. In other words, the aim of this chapter is to consider how multiple IoT platforms can “understand” each other and have meaningful “conversation”.