Smart City is one of the recent concepts which every city is craving for now a days. Research is going on extensively at both national and international levels in developing smarter and smartest cities for the upcoming era. This chapter is an effort to bring about underlying concepts, needs, provocations, exigencies behind the establishment of stylish cities. Complete flawless communication among cities poses a challenge for constructing completely automated niche and a new way to explore the unexplored domain. Contemporary findings reveal that for implementing stylish niche, in 2021 around 35 billion devices were utilized globally. Working flawlessly with such a humongous collection of devices posed as demanding issue, thus drawing major attention of investigators from varied domains like academic-based and industry-based towards the flawless construction of new-stylish niches called as “smart cities”. A lot many concepts like smart grids, eHealth-cares, e Environmental-monitoring systems, smart-homes, smart-water purifiers, Smart-Air-Quality systems etc. are now put together to give a new concept of stylish city or rural niche. All this includes the latest 5G networks with high-end tools and technologies with full and flawless real time updates. The research work elaborated in this chapter includes a crisp study of the underlying technical confrontations lying in the path of style-oriented niches. We will also throw ample light on the implementation issues for the various other sub-domains as mentioned above.