Mobile and the Internet of Things (IoT) are two examples of particularly rapidly evolving ecosystems. In both cases, the diversity and rate of change (in mobile devices as well as in IoT “things”) are challenging factors. This means that it is essential to have an IT architecture in place that provides both the stability, and the flexibility to be able to handle the changing landscape. Cleanly identifying and managing services is a foundation that can then be used to quickly and robustly build mobile applications that are based on IoT services.