Considered an essential link in the logistics chain, the port has undergone various restructurings and evolutions throughout generations. Many economic, socioeconomic, political, and environmental factors require ports to move towards digitalization and sustainability. To this end, ports are required to change into smart ports that align with new Industry 4.0 practices to ensure their sustainability. This study proposes a systematic review of the literature on the emerging smart port concept to continue the work started by Buiza et al. and Molavi et al., aiming at a broader and comprehensive understanding of the smart port concept by business domain to fill this gap in literature. This research proposes 11 smart port characteristics grouped into 7 business domains. A definition is also proposed to update the concept.