Smart = ? Depending on that a lot of answers, being smart could mean to find a good specialisation in the globalisation. Moreover what is a city ? a municipality ? an urban area ? a conurbation? 

A "smart city" is a place where traditional infrastructure, networks, and services are made more efficient through information and communications technology (ICT). But, what do smart cities mean for the three billion people who shall be living in slums by 2050? The concept of a smart city can—and must—mean more than the use of ICT for urban transport and lower emissions of greenhouse gases: among others, it implies smarter, upgraded water supply and waste disposal facilities, and more efficient ways of lighting and regenerating urban districts; it also encompasses a more interactive and responsive administration, education, healthcare, safer public spaces, and the needs of growing and ageing populations. Digital financial services systems beckon too.

In short, a smart city is not just a city that leverages ICT in a particular sector but that implements ICT for the benefit of its communities, with their participatory action and engagement, to excel in the areas of economy, environment, living, mobility, people, and government. Definitely, ICT cannot do it alone: but it is an indispensable ally of commercialization, funding, intelligent policies, business-process transformation, and business-model innovation.

PS: By 2030, Asia and the Pacific shall have at least 22 megacities including Tokyo (37.2 million), Delhi (36.0 million), Shanghai (30.7 million), Mumbai (27.8 million), Beijing (27.7 million), Dhaka (27.4 million), and Karachi (24.8 million). (A megacity is usually defined as a metropolitan area, or two or more metropolitan areas that converge, with a total population in excess of ten million people.) All the while, smaller settlements of 500,000 inhabitants continue to grow; indeed many of the fastest growing cities in the world are such settlements.

Olier I appreciate your answer to this difficult question. nevertheless smarth is not big and even clever.   harmony is the key word. Transport location, and so forth. With a specialisation in the globalisation. Where the people feel happy, where is the smart city.