Generally, by embracing the aforementioned solutions, public authorities can genuinely improve the way urban areas function as well as enable the vision of the regular city to be smart. The combination of these solutions could have a big impact on the ways we live and work in the coming years and provide valuable applications such as smart parking spots, automated order fulfillment, water conservation technology, self-driving cars, alternative transportation, smart traffic system management, environmental management, Internet mesh Nets, 5G, proptech, adaptable buildings, pollution and noise control technology and finally, Blockchain-based services[2].

However, in order to adopt the smart city concept, it is also important -before anything else- to identify the key application requirements and features that the deployments need it to support the innovation of smart cities. According to a recent study[3], these application requirements of the smart city concept are summarized as follows: interoperability among heterogeneous devices, scalability, self-organization capabilities, mobility, reliability, real-time data collection and transmission, user support and awareness to end-users, and last but not least, embedded security and privacy mechanisms.