Abstract: Smart and high- tech metropolises represent the zenith of civic invention, using slice- edge technologies to enhance effectiveness, sustainability, and quality of life for residers. This composition provides a comprehensive study of the crucial technologies driving the elaboration of smart metropolises, including Internet of effects ( IoT) bias, artificial intelligence( AI), big data analytics, renewable energy, and civic mobility results. Also, it explores the counter accusations of these advancements on colourful aspects of civic life, similar as transportation, energy operation, healthcare, and governance. By examining recent developments and unborn prospects, this paper aims to contribute to a deeper understanding of the openings and challenges associated with the metamorphosis towards smarter and further sustainable metropolises.