Three upcoming technologies – Internet of Things, Wearables, and Cloud Computing are seen to converge in support of smart buildings and smart cities. In this paper characteristics of interactive architecture is discussed, and how the mentioned technologies may impact such buildings. The conception, design, and creation of in-teractive architecture requires a rethinking of the design process by the architect. Some preliminary strategies are outlined to achieve this. The role of the architect moves to a composer- or conductor-like style.