The development of information and communication technology is one of the driving forces behind the implementation of smart cities in Indonesia. The provision of public services in urban areas is one of the prominent implementations of an electronic-based government system, as in the case of Indonesia. How information and communication technologies are understood, developed, and applied is vital for providing conceptual and practical advice in planning productive smart urbanism and building smart cities. Smart cities and smart urbanism are trends and answers to pressing urban issues. Innovation and technology are important factors in the new smart city and sustainable urbanism. This chapter aims to define the concepts of smart city and smart urbanization and their implementation in Indonesia. This study employs data analysis techniques from literature studies as well as secondary data collecting and analysis using online sources. The findings show that smart cities are part of smart urbanism in Indonesia, as indicated by the integration of digital technology in the form of developing digital infrastructure, providing services, increasing digital literacy, and developing human resources, as well as aspects of buildings and the environment in urban areas.