This paper presents an overview of a smart city 4.0 framework in accelerating digital transformation, especially during the COVID-19 pandemic, using Jakarta as a case study. The findings of this study provide new insights how to translate a vision into a reality in the form of smart city 4.0 framework that offers a significant opportunity to advance the understanding of building a smart city ecosystem with technologies, innovations and collaborations. This paper applies four principles of the framework, namely mobile-first, system-and-data driven, digital experience, and smart collaboration in building a smart city 4.0 ecosystem platform. Part of the aim of this paper is to examine Jakarta's super-app called JAKI that is compatible with such principles as a use case in the time of the pandemic. It provides a better understanding of common elements in building a new concept of a smart city. The results will inspire and give a contribution to other cities to consider the framework in building a smart city 4.0 ecosystem platform to foster quality of life, economic growth and sustainability.