Rapid urbanization has transformed cities into highly complex socio-technical systems, where efficient management of infrastructure, resources, and services has become increasingly challenging. Conventional urban management models rely on fragmented systems, manual supervision, and delayed decision-making processes, which are inadequate for addressing modern urban issues such as traffic congestion, energy inefficiency, environmental pollution, waste management, and public safety. The growing scale and interdependence of urban services demand intelligent, adaptive, and real-time management approaches.

The Internet of Things (IoT), when combined with intelligent systems, provides a powerful technological foundation for enabling smart and sustainable cities. IoT facilitates continuous data acquisition from distributed urban assets, while intelligent analytics transform this data into actionable insights for decision-making and automation. This research paper presents a comprehensive technical study of an intelligent IoT framework for sustainable urban management in smart cities. The paper examines the architectural components of IoT-enabled smart city systems, including sensing infrastructure, communication networks, data processing layers, and intelligent application services.

The role of enabling technologies such as artificial intelligence, machine learning, cloud computing, and edge computing is analyzed in supporting scalability, low-latency responses, and efficient resource utilization. Key urban application domains including intelligent transportation systems, smart energy management, environmental monitoring, waste management, and public safety are discussed in detail. Furthermore, the paper identifies critical challenges related to data security, privacy, interoperability, scalability, data reliability, and governance. By synthesizing existing research and technological advancements, this study aims to provide a structured framework to guide researchers, policymakers, and urban planners in the development of resilient, efficient, and sustainable smart city ecosystems.