The concept of Smart Cities in India represents a transformative approach to urban development, integrating technology, sustainability, and citizen participation to improve quality of life. Launched in 2015 under the Smart Cities Mission, the initiative aims to develop 100 cities with modern infrastructure and digital governance systems. This paper examines the historical background, objectives, implementation strategies, achievements, and challenges of the Smart Cities initiative in India. The study also evaluates its impact on sustainable urban growth and future prospects.