This document discusses the concept and development of smart cities. It notes that rapid urbanization is straining resources and infrastructure in cities. To address these challenges, the development of smart cities is seen as inevitable. The key aspects of smart cities include using digital technologies to enhance performance, reduce costs and resource use, and better engage citizens. India has a plan to build 100 smart cities as part of its Digital India initiative. The benefits of smart cities include more sustainable economic development and improved services like electricity, water, transportation and waste management through the use of sensor data and smart grids.