Following this early work, the growing interest and implementation of the Internet of Things started to raise some questions about the application layer of the IoT.[1] While most of the work in the IoT space focused on network protocols, there was a need to think about the convergence of data from IoT devices. In particular, rather than looking at "one device one app", researchers and practitioners started envisioning the IoT as a system where data from various devices could be consumed by Web applications to create innovative use-cases.