As the global population continues to grow at a steady pace, more and more people are moving to cities every single day. Experts predict the world’s urban population will double by 2050 – which means we’re adding the equivalent of seven New Delhi Cities to the planet every single year. Urban areas also contribute a higher share of GDP. In India, the urban population is currently 31% of the total population and it contributes over 60% of India’s GDP. It is projected that urban India will contribute nearly 75% of the national GDP in the next 15 years. Cities are accordingly referred to as the engines of economic growth. There is accordingly a crying need for the cities to get smarter to handle this large-scale urbanization and finding new ways to manage complexity, increase efficiency, reduce expenses, and improve quality of life.
A smart city uses digital technologies to enhance quality and performance of urban services, to reduce costs and resource consumption, and to engage more effectively and actively with its citizens. The key features of a Smart City is in the intersect between competitiveness, Capital and Sustainability. The smart cities should be able to provide good infrastructure such as water, sanitation, reliable utility services, health care; attract investments; transparent processes that make it easy to run a commercial activities; simple and on line processes for obtaining approvals, and various citizen centric services to make citizens feel safe and happy.

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http://indiansmartcities.in/site/index.aspx   |   https://en.wikipedia.org/wiki/Smart_city