e-Governance in smart cities represents the digital transformation of governance processes to make urban management more efficient, transparent, participatory, and responsive to the needs of citizens. As cities continue to grow rapidly in terms of population and economic activities, the demand for better urban services, sustainable infrastructure, and efficient resource utilization becomes more pressing. Traditional governance structures often fail to cope with these demands due to bureaucratic delays, fragmented communication, and lack of citizen engagement. e-Governance addresses these gaps by leveraging information and communication technologies (ICT), data analytics, and digital platforms to create a new model of governance that is citizen-centric, inclusive, and sustainable. Within the framework of sustainable development and smart cities, e-Governance plays a crucial role by not only enabling efficient service delivery but also by fostering innovation, reducing environmental footprints, and promoting social equity. At its core, e-Governance in smart cities focuses on four major dimensions: efficiency, transparency, participation, and inclusivity. Efficiency is achieved by digitalizing administrative processes, automating routine tasks, and providing online platforms for services such as tax payments, utility billing, and grievance redressal. Transparency is enhanced through open data platforms and real-time dashboards that allow citizens to monitor the performance of municipal authorities. Participation is facilitated by enabling citizens to voice their concerns and provide feedback through apps, social media integration, and e-consultations. Inclusivity ensures that these digital tools are accessible to all sections of society, bridging the digital divide and ensuring equitable access to urban services. One of the key applications of e-Governance in smart cities is in urban planning and infrastructure management. Geographic Information Systems (GIS) and data-driven decision-making allow city planners to monitor land use, traffic patterns, and population density in real time. Citizens can also access zoning information, construction approvals, and environmental clearances through online platforms, making the process more transparent and accountable. This reduces instances of corruption and accelerates the pace of infrastructure development. Moreover, the integration of sensors and IoT devices within smart cities provides real-time data on utilities such as water supply, waste management, and electricity usage. Through e-Governance platforms, municipal authorities can monitor leakages, optimize energy consumption, and improve waste collection efficiency, thereby reducing costs and environmental degradation while ensuring sustainable resource management. Another vital area where e-Governance contributes to smart cities is public