  Converting the city into a "smart" one is the emerging strategy of
alleviating the problems generated by the rapid population growth in most urban
areas, i.e., urbanisation. However, as the rate in which the different concepts
of the smart city architecture are implemented is very high, academic research
pertaining these advancements simply can not keep up. To improve the existing
knowledge-base regarding the concept of smart cities, this paper reviews the
existing definitions, as well as its architectures, based on an in-depth
literature review of relevant studies and research fields alike. Additionally,
we also provide our own definition of the smart city concept.
